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Initial reorg.

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This is largely the same as #305, but updated for the current tree.
This commit is contained in:
Dan Gohman
2019-11-07 17:11:06 -08:00
parent 2c69546a24
commit 22641de629
351 changed files with 52 additions and 52 deletions
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[package]
name = "wasmtime-wasi"
version = "0.2.0"
authors = ["The Cranelift Project Developers"]
description = "WASI API support for Wasmtime"
categories = ["wasm"]
repository = "https://github.com/CraneStation/wasmtime"
license = "Apache-2.0 WITH LLVM-exception"
readme = "README.md"
edition = "2018"
[dependencies]
wasmtime-runtime = { path = "../runtime" }
wasmtime-environ = { path = "../environ" }
wasmtime-jit = { path = "../jit" }
wasi-common = { path = "../wasi-common" }
cranelift-codegen = { version = "0.49", features = ["enable-serde"] }
cranelift-entity = { version = "0.49", features = ["enable-serde"] }
cranelift-wasm = { version = "0.49", features = ["enable-serde"] }
target-lexicon = "0.9.0"
log = { version = "0.4.8", default-features = false }
[badges]
maintenance = { status = "experimental" }
travis-ci = { repository = "CraneStation/wasmtime" }

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This is the `wasmtime-wasi` crate, which implements the
WebAssembly System Interface (WASI) API in Rust.
WASI is greatly inspired by and directly derived from [CloudABI].
It differs in that it has aspirations to expand to a greater
scope, and to better support the needs of WebAssembly engines.
[CloudABI]: https://cloudabi.org/

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For the current polyfill sources, please checkout this same directory in
[the polyfill branch](https://github.com/CraneStation/wasmtime/tree/polyfill/).

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use super::syscalls;
use alloc::rc::Rc;
use core::cell::RefCell;
use cranelift_codegen::ir::types;
use cranelift_codegen::{ir, isa};
use cranelift_entity::PrimaryMap;
use cranelift_wasm::DefinedFuncIndex;
use std::collections::HashMap;
use std::fs::File;
use target_lexicon::HOST;
use wasi_common::{WasiCtx, WasiCtxBuilder};
use wasmtime_environ::{translate_signature, Export, Module};
use wasmtime_runtime::{Imports, InstanceHandle, InstantiationError, VMFunctionBody};
/// Return an instance implementing the "wasi" interface.
pub fn instantiate_wasi(
prefix: &str,
global_exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
preopened_dirs: &[(String, File)],
argv: &[String],
environ: &[(String, String)],
) -> Result<InstanceHandle, InstantiationError> {
let mut wasi_ctx_builder = WasiCtxBuilder::new()
.inherit_stdio()
.args(argv)
.envs(environ);
for (dir, f) in preopened_dirs {
wasi_ctx_builder = wasi_ctx_builder.preopened_dir(
f.try_clone().map_err(|err| {
InstantiationError::Resource(format!(
"couldn't clone an instance handle to pre-opened dir: {}",
err
))
})?,
dir,
);
}
let wasi_ctx = wasi_ctx_builder.build().map_err(|err| {
InstantiationError::Resource(format!("couldn't assemble WASI context object: {}", err))
})?;
instantiate_wasi_with_context(prefix, global_exports, wasi_ctx)
}
/// Return an instance implementing the "wasi" interface.
///
/// The wasi context is configured by
pub fn instantiate_wasi_with_context(
prefix: &str,
global_exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
wasi_ctx: WasiCtx,
) -> Result<InstanceHandle, InstantiationError> {
let pointer_type = types::Type::triple_pointer_type(&HOST);
let mut module = Module::new();
let mut finished_functions: PrimaryMap<DefinedFuncIndex, *const VMFunctionBody> =
PrimaryMap::new();
let call_conv = isa::CallConv::triple_default(&HOST);
macro_rules! signature {
($name:ident) => {{
let sig = module.signatures.push(translate_signature(
ir::Signature {
params: syscalls::$name::params()
.into_iter()
.map(ir::AbiParam::new)
.collect(),
returns: syscalls::$name::results()
.into_iter()
.map(ir::AbiParam::new)
.collect(),
call_conv,
},
pointer_type,
));
let func = module.functions.push(sig);
module.exports.insert(
prefix.to_owned() + stringify!($name),
Export::Function(func),
);
finished_functions.push(syscalls::$name::SHIM as *const VMFunctionBody);
}};
}
signature!(args_get);
signature!(args_sizes_get);
signature!(clock_res_get);
signature!(clock_time_get);
signature!(environ_get);
signature!(environ_sizes_get);
signature!(fd_prestat_get);
signature!(fd_prestat_dir_name);
signature!(fd_close);
signature!(fd_datasync);
signature!(fd_pread);
signature!(fd_pwrite);
signature!(fd_read);
signature!(fd_renumber);
signature!(fd_seek);
signature!(fd_tell);
signature!(fd_fdstat_get);
signature!(fd_fdstat_set_flags);
signature!(fd_fdstat_set_rights);
signature!(fd_sync);
signature!(fd_write);
signature!(fd_advise);
signature!(fd_allocate);
signature!(path_create_directory);
signature!(path_link);
signature!(path_open);
signature!(fd_readdir);
signature!(path_readlink);
signature!(path_rename);
signature!(fd_filestat_get);
signature!(fd_filestat_set_times);
signature!(fd_filestat_set_size);
signature!(path_filestat_get);
signature!(path_filestat_set_times);
signature!(path_symlink);
signature!(path_unlink_file);
signature!(path_remove_directory);
signature!(poll_oneoff);
signature!(proc_exit);
signature!(proc_raise);
signature!(random_get);
signature!(sched_yield);
signature!(sock_recv);
signature!(sock_send);
signature!(sock_shutdown);
let imports = Imports::none();
let data_initializers = Vec::new();
let signatures = PrimaryMap::new();
InstanceHandle::new(
Rc::new(module),
global_exports,
finished_functions.into_boxed_slice(),
imports,
&data_initializers,
signatures.into_boxed_slice(),
None,
Box::new(wasi_ctx),
)
}

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extern crate alloc;
mod instantiate;
mod syscalls;
pub use instantiate::{instantiate_wasi, instantiate_wasi_with_context};

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use cranelift_codegen::ir::types::{Type, I32, I64};
use log::{error, trace};
use wasi_common::{hostcalls, wasi, wasi32, WasiCtx};
use wasmtime_runtime::{Export, VMContext};
pub trait AbiRet {
type Abi;
fn convert(self) -> Self::Abi;
fn codegen_tys() -> Vec<Type>;
}
pub trait AbiParam {
type Abi;
fn convert(arg: Self::Abi) -> Self;
fn codegen_ty() -> Type;
}
macro_rules! cast32 {
($($i:ident)*) => ($(
impl AbiRet for $i {
type Abi = i32;
fn convert(self) -> Self::Abi {
self as i32
}
fn codegen_tys() -> Vec<Type> { vec![I32] }
}
impl AbiParam for $i {
type Abi = i32;
fn convert(param: i32) -> Self {
param as $i
}
fn codegen_ty() -> Type { I32 }
}
)*)
}
macro_rules! cast64 {
($($i:ident)*) => ($(
impl AbiRet for $i {
type Abi = i64;
fn convert(self) -> Self::Abi {
self as i64
}
fn codegen_tys() -> Vec<Type> { vec![I64] }
}
impl AbiParam for $i {
type Abi = i64;
fn convert(param: i64) -> Self {
param as $i
}
fn codegen_ty() -> Type { I64 }
}
)*)
}
cast32!(i8 i16 i32 u8 u16 u32);
cast64!(i64 u64);
impl AbiRet for () {
type Abi = ();
fn convert(self) {}
fn codegen_tys() -> Vec<Type> {
Vec::new()
}
}
fn get_wasi_ctx(vmctx: &mut VMContext) -> Result<&mut WasiCtx, wasi::__wasi_errno_t> {
unsafe {
vmctx
.host_state()
.downcast_mut::<WasiCtx>()
.ok_or_else(|| panic!("no host state named WasiCtx available"))
}
}
fn get_memory(vmctx: &mut VMContext) -> Result<&mut [u8], wasi::__wasi_errno_t> {
unsafe {
match vmctx.lookup_global_export("memory") {
Some(Export::Memory {
definition,
vmctx: _,
memory: _,
}) => Ok(std::slice::from_raw_parts_mut(
(*definition).base,
(*definition).current_length,
)),
x => {
error!(
"no export named \"memory\", or the export isn't a mem: {:?}",
x
);
Err(wasi::__WASI_EINVAL)
}
}
}
}
macro_rules! ok_or_errno {
($expr:expr) => {
match $expr {
Ok(v) => v,
Err(e) => {
trace!(" -> errno={}", wasi::strerror(e));
return e;
}
}
};
}
macro_rules! syscalls {
($(pub unsafe extern "C" fn $name:ident($ctx:ident: *mut VMContext $(, $arg:ident: $ty:ty)*,) -> $ret:ty {
$($body:tt)*
})*) => ($(
pub mod $name {
use super::*;
/// Returns the codegen types of all the parameters to the shim
/// generated
pub fn params() -> Vec<Type> {
vec![$(<$ty as AbiParam>::codegen_ty()),*]
}
/// Returns the codegen types of all the results of the shim
/// generated
pub fn results() -> Vec<Type> {
<$ret as AbiRet>::codegen_tys()
}
/// The actual function pointer to the shim for a syscall.
///
/// NB: ideally we'd expose `shim` below, but it seems like there's
/// a compiler bug which prvents that from being cast to a `usize`.
pub static SHIM: unsafe extern "C" fn(
*mut VMContext,
$(<$ty as AbiParam>::Abi),*
) -> <$ret as AbiRet>::Abi = shim;
unsafe extern "C" fn shim(
$ctx: *mut VMContext,
$($arg: <$ty as AbiParam>::Abi,)*
) -> <$ret as AbiRet>::Abi {
let r = super::$name($ctx, $(<$ty as AbiParam>::convert($arg),)*);
<$ret as AbiRet>::convert(r)
}
}
pub unsafe extern "C" fn $name($ctx: *mut VMContext, $($arg: $ty,)*) -> $ret {
$($body)*
}
)*)
}
syscalls! {
pub unsafe extern "C" fn args_get(
vmctx: *mut VMContext,
argv: wasi32::uintptr_t,
argv_buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"args_get(argv={:#x?}, argv_buf={:#x?})",
argv,
argv_buf,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::args_get(wasi_ctx, memory, argv, argv_buf)
}
pub unsafe extern "C" fn args_sizes_get(
vmctx: *mut VMContext,
argc: wasi32::uintptr_t,
argv_buf_size: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"args_sizes_get(argc={:#x?}, argv_buf_size={:#x?})",
argc,
argv_buf_size,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::args_sizes_get(wasi_ctx, memory, argc, argv_buf_size)
}
pub unsafe extern "C" fn clock_res_get(
vmctx: *mut VMContext,
clock_id: wasi::__wasi_clockid_t,
resolution: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"clock_res_get(clock_id={:?}, resolution={:#x?})",
clock_id,
resolution,
);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::clock_res_get(memory, clock_id, resolution)
}
pub unsafe extern "C" fn clock_time_get(
vmctx: *mut VMContext,
clock_id: wasi::__wasi_clockid_t,
precision: wasi::__wasi_timestamp_t,
time: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"clock_time_get(clock_id={:?}, precision={:?}, time={:#x?})",
clock_id,
precision,
time,
);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::clock_time_get(memory, clock_id, precision, time)
}
pub unsafe extern "C" fn environ_get(
vmctx: *mut VMContext,
environ: wasi32::uintptr_t,
environ_buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"environ_get(environ={:#x?}, environ_buf={:#x?})",
environ,
environ_buf,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::environ_get(wasi_ctx, memory, environ, environ_buf)
}
pub unsafe extern "C" fn environ_sizes_get(
vmctx: *mut VMContext,
environ_count: wasi32::uintptr_t,
environ_buf_size: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"environ_sizes_get(environ_count={:#x?}, environ_buf_size={:#x?})",
environ_count,
environ_buf_size,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::environ_sizes_get(wasi_ctx, memory, environ_count, environ_buf_size)
}
pub unsafe extern "C" fn fd_prestat_get(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_prestat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_prestat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_prestat_dir_name(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!("fd_prestat_dir_name(fd={:?}, path={:#x?}, path_len={})", fd, path, path_len);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_prestat_dir_name(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn fd_close(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_close(fd={:?})", fd);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_close(wasi_ctx, fd)
}
pub unsafe extern "C" fn fd_datasync(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_datasync(fd={:?})", fd);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_datasync(wasi_ctx, fd)
}
pub unsafe extern "C" fn fd_pread(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
offset: wasi::__wasi_filesize_t,
nread: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_pread(fd={:?}, iovs={:#x?}, iovs_len={:?}, offset={}, nread={:#x?})",
fd,
iovs,
iovs_len,
offset,
nread
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_pread(
wasi_ctx,
memory,
fd,
iovs,
iovs_len,
offset,
nread
)
}
pub unsafe extern "C" fn fd_pwrite(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
offset: wasi::__wasi_filesize_t,
nwritten: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_pwrite(fd={:?}, iovs={:#x?}, iovs_len={:?}, offset={}, nwritten={:#x?})",
fd,
iovs,
iovs_len,
offset,
nwritten
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_pwrite(
wasi_ctx,
memory,
fd,
iovs,
iovs_len,
offset,
nwritten
)
}
pub unsafe extern "C" fn fd_read(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
nread: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_read(fd={:?}, iovs={:#x?}, iovs_len={:?}, nread={:#x?})",
fd,
iovs,
iovs_len,
nread
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_read(wasi_ctx, memory, fd, iovs, iovs_len, nread)
}
pub unsafe extern "C" fn fd_renumber(
vmctx: *mut VMContext,
from: wasi::__wasi_fd_t,
to: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_renumber(from={:?}, to={:?})", from, to);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_renumber(wasi_ctx, from, to)
}
pub unsafe extern "C" fn fd_seek(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filedelta_t,
whence: wasi::__wasi_whence_t,
newoffset: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_seek(fd={:?}, offset={:?}, whence={}, newoffset={:#x?})",
fd,
offset,
wasi::whence_to_str(whence),
newoffset
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_seek(wasi_ctx, memory, fd, offset, whence, newoffset)
}
pub unsafe extern "C" fn fd_tell(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
newoffset: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_tell(fd={:?}, newoffset={:#x?})", fd, newoffset);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_tell(wasi_ctx, memory, fd, newoffset)
}
pub unsafe extern "C" fn fd_fdstat_get(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_fdstat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_fdstat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_fdstat_set_flags(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_fdflags_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_fdstat_set_flags(fd={:?}, flags={:#x?})",
fd,
flags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_fdstat_set_flags(wasi_ctx, fd, flags)
}
pub unsafe extern "C" fn fd_fdstat_set_rights(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
fs_rights_base: wasi::__wasi_rights_t,
fs_rights_inheriting: wasi::__wasi_rights_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_fdstat_set_rights(fd={:?}, fs_rights_base={:#x?}, fs_rights_inheriting={:#x?})",
fd,
fs_rights_base,
fs_rights_inheriting
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_fdstat_set_rights(
wasi_ctx,
fd,
fs_rights_base,
fs_rights_inheriting
)
}
pub unsafe extern "C" fn fd_sync(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_sync(fd={:?})", fd);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_sync(wasi_ctx, fd)
}
pub unsafe extern "C" fn fd_write(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
nwritten: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_write(fd={:?}, iovs={:#x?}, iovs_len={:?}, nwritten={:#x?})",
fd,
iovs,
iovs_len,
nwritten
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_write(wasi_ctx, memory, fd, iovs, iovs_len, nwritten)
}
pub unsafe extern "C" fn fd_advise(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filesize_t,
len: wasi::__wasi_filesize_t,
advice: wasi::__wasi_advice_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_advise(fd={:?}, offset={}, len={}, advice={:?})",
fd,
offset,
len,
advice
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_advise(wasi_ctx, fd, offset, len, advice)
}
pub unsafe extern "C" fn fd_allocate(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filesize_t,
len: wasi::__wasi_filesize_t,
) -> wasi::__wasi_errno_t {
trace!("fd_allocate(fd={:?}, offset={}, len={})", fd, offset, len);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_allocate(wasi_ctx, fd, offset, len)
}
pub unsafe extern "C" fn path_create_directory(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_create_directory(fd={:?}, path={:#x?}, path_len={})",
fd,
path,
path_len,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_create_directory(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn path_link(
vmctx: *mut VMContext,
fd0: wasi::__wasi_fd_t,
flags0: wasi::__wasi_lookupflags_t,
path0: wasi32::uintptr_t,
path_len0: wasi32::size_t,
fd1: wasi::__wasi_fd_t,
path1: wasi32::uintptr_t,
path_len1: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_link(fd0={:?}, flags0={:?}, path0={:#x?}, path_len0={}, fd1={:?}, path1={:#x?}, path_len1={})",
fd0,
flags0,
path0,
path_len0,
fd1,
path1,
path_len1
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_link(
wasi_ctx,
memory,
fd0,
flags0,
path0,
path_len0,
fd1,
path1,
path_len1
)
}
// TODO: When multi-value happens, switch to that instead of passing
// the `fd` by reference?
pub unsafe extern "C" fn path_open(
vmctx: *mut VMContext,
dirfd: wasi::__wasi_fd_t,
dirflags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
oflags: wasi::__wasi_oflags_t,
fs_rights_base: wasi::__wasi_rights_t,
fs_rights_inheriting: wasi::__wasi_rights_t,
fs_flags: wasi::__wasi_fdflags_t,
fd: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_open(dirfd={:?}, dirflags={:?}, path={:#x?}, path_len={:?}, oflags={:#x?}, fs_rights_base={:#x?}, fs_rights_inheriting={:#x?}, fs_flags={:#x?}, fd={:#x?})",
dirfd,
dirflags,
path,
path_len,
oflags,
fs_rights_base,
fs_rights_inheriting,
fs_flags,
fd
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_open(
wasi_ctx,
memory,
dirfd,
dirflags,
path,
path_len,
oflags,
fs_rights_base,
fs_rights_inheriting,
fs_flags,
fd
)
}
pub unsafe extern "C" fn fd_readdir(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
buf_len: wasi32::size_t,
cookie: wasi::__wasi_dircookie_t,
buf_used: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_readdir(fd={:?}, buf={:#x?}, buf_len={}, cookie={:#x?}, buf_used={:#x?})",
fd,
buf,
buf_len,
cookie,
buf_used,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_readdir(
wasi_ctx,
memory,
fd,
buf,
buf_len,
cookie,
buf_used
)
}
pub unsafe extern "C" fn path_readlink(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
buf: wasi32::uintptr_t,
buf_len: wasi32::size_t,
buf_used: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_readlink(fd={:?}, path={:#x?}, path_len={:?}, buf={:#x?}, buf_len={}, buf_used={:#x?})",
fd,
path,
path_len,
buf,
buf_len,
buf_used,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_readlink(
wasi_ctx,
memory,
fd,
path,
path_len,
buf,
buf_len,
buf_used
)
}
pub unsafe extern "C" fn path_rename(
vmctx: *mut VMContext,
fd0: wasi::__wasi_fd_t,
path0: wasi32::uintptr_t,
path_len0: wasi32::size_t,
fd1: wasi::__wasi_fd_t,
path1: wasi32::uintptr_t,
path_len1: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_rename(fd0={:?}, path0={:#x?}, path_len0={:?}, fd1={:?}, path1={:#x?}, path_len1={:?})",
fd0,
path0,
path_len0,
fd1,
path1,
path_len1,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_rename(
wasi_ctx,
memory,
fd0,
path0,
path_len0,
fd1,
path1,
path_len1
)
}
pub unsafe extern "C" fn fd_filestat_get(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_filestat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::fd_filestat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_filestat_set_times(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
st_atim: wasi::__wasi_timestamp_t,
st_mtim: wasi::__wasi_timestamp_t,
fstflags: wasi::__wasi_fstflags_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_filestat_set_times(fd={:?}, st_atim={}, st_mtim={}, fstflags={:#x?})",
fd,
st_atim, st_mtim,
fstflags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_filestat_set_times(wasi_ctx, fd, st_atim, st_mtim, fstflags)
}
pub unsafe extern "C" fn fd_filestat_set_size(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
size: wasi::__wasi_filesize_t,
) -> wasi::__wasi_errno_t {
trace!(
"fd_filestat_set_size(fd={:?}, size={})",
fd,
size
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
hostcalls::fd_filestat_set_size(wasi_ctx, fd, size)
}
pub unsafe extern "C" fn path_filestat_get(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_filestat_get(fd={:?}, flags={:?}, path={:#x?}, path_len={}, buf={:#x?})",
fd,
flags,
path,
path_len,
buf
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_filestat_get(wasi_ctx, memory, fd, flags, path, path_len, buf)
}
pub unsafe extern "C" fn path_filestat_set_times(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
st_atim: wasi::__wasi_timestamp_t,
st_mtim: wasi::__wasi_timestamp_t,
fstflags: wasi::__wasi_fstflags_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_filestat_set_times(fd={:?}, flags={:?}, path={:#x?}, path_len={}, st_atim={}, st_mtim={}, fstflags={:#x?})",
fd,
flags,
path,
path_len,
st_atim, st_mtim,
fstflags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_filestat_set_times(
wasi_ctx,
memory,
fd,
flags,
path,
path_len,
st_atim,
st_mtim,
fstflags
)
}
pub unsafe extern "C" fn path_symlink(
vmctx: *mut VMContext,
path0: wasi32::uintptr_t,
path_len0: wasi32::size_t,
fd: wasi::__wasi_fd_t,
path1: wasi32::uintptr_t,
path_len1: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_symlink(path0={:#x?}, path_len0={}, fd={:?}, path1={:#x?}, path_len1={})",
path0,
path_len0,
fd,
path1,
path_len1
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_symlink(
wasi_ctx,
memory,
path0,
path_len0,
fd,
path1,
path_len1
)
}
pub unsafe extern "C" fn path_unlink_file(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_unlink_file(fd={:?}, path={:#x?}, path_len={})",
fd,
path,
path_len
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_unlink_file(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn path_remove_directory(
vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!(
"path_remove_directory(fd={:?}, path={:#x?}, path_len={})",
fd,
path,
path_len
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::path_remove_directory(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn poll_oneoff(
vmctx: *mut VMContext,
in_: wasi32::uintptr_t,
out: wasi32::uintptr_t,
nsubscriptions: wasi32::size_t,
nevents: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"poll_oneoff(in={:#x?}, out={:#x?}, nsubscriptions={}, nevents={:#x?})",
in_,
out,
nsubscriptions,
nevents,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::poll_oneoff(wasi_ctx, memory, in_, out, nsubscriptions, nevents)
}
pub unsafe extern "C" fn proc_exit(_vmctx: *mut VMContext, rval: u32,) -> () {
trace!("proc_exit(rval={:?})", rval);
hostcalls::proc_exit(rval)
}
pub unsafe extern "C" fn proc_raise(
vmctx: *mut VMContext,
sig: wasi::__wasi_signal_t,
) -> wasi::__wasi_errno_t {
trace!("proc_raise(sig={:?})", sig);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::proc_raise(wasi_ctx, memory, sig)
}
pub unsafe extern "C" fn random_get(
vmctx: *mut VMContext,
buf: wasi32::uintptr_t,
buf_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!("random_get(buf={:#x?}, buf_len={:?})", buf, buf_len);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::random_get(memory, buf, buf_len)
}
pub unsafe extern "C" fn sched_yield(_vmctx: *mut VMContext,) -> wasi::__wasi_errno_t {
trace!("sched_yield(void)");
hostcalls::sched_yield()
}
pub unsafe extern "C" fn sock_recv(
vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
ri_data: wasi32::uintptr_t,
ri_data_len: wasi32::size_t,
ri_flags: wasi::__wasi_riflags_t,
ro_datalen: wasi32::uintptr_t,
ro_flags: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"sock_recv(sock={:?}, ri_data={:#x?}, ri_data_len={}, ri_flags={:#x?}, ro_datalen={:#x?}, ro_flags={:#x?})",
sock,
ri_data, ri_data_len, ri_flags,
ro_datalen, ro_flags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::sock_recv(
wasi_ctx,
memory,
sock,
ri_data,
ri_data_len,
ri_flags,
ro_datalen,
ro_flags
)
}
pub unsafe extern "C" fn sock_send(
vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
si_data: wasi32::uintptr_t,
si_data_len: wasi32::size_t,
si_flags: wasi::__wasi_siflags_t,
so_datalen: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!(
"sock_send(sock={:?}, si_data={:#x?}, si_data_len={}, si_flags={:#x?}, so_datalen={:#x?})",
sock,
si_data, si_data_len, si_flags, so_datalen,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::sock_send(
wasi_ctx,
memory,
sock,
si_data,
si_data_len,
si_flags,
so_datalen
)
}
pub unsafe extern "C" fn sock_shutdown(
vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
how: wasi::__wasi_sdflags_t,
) -> wasi::__wasi_errno_t {
trace!("sock_shutdown(sock={:?}, how={:?})", sock, how);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
hostcalls::sock_shutdown(wasi_ctx, memory, sock, how)
}
}