| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `executor/context/src/context.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>context.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../teaclave_executor_context/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../teaclave_executor_context/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| </span><span class="kw">use </span>std::cell::RefCell; |
| <span class="kw">use </span>std::slice; |
| <span class="kw">use </span>std::thread_local; |
| |
| <span class="kw">use </span>sgx_types::types::{c_char, c_int, c_uchar, c_uint, size_t}; |
| |
| <span class="kw">use </span>std::collections::HashMap; |
| |
| <span class="kw">use </span>teaclave_types::TeaclaveRuntime; |
| |
| <span class="kw">use </span>std::ffi::c_void; |
| |
| <span class="kw">const </span>FFI_OK: c_uint = <span class="number">0</span>; |
| <span class="kw">const </span>FFI_FILE_ERROR: c_uint = <span class="number">1</span>; |
| <span class="kw">const </span>FFI_FILE_ERROR_WASM: c_int = -<span class="number">1</span>; |
| |
| <span class="kw">pub struct </span>Context { |
| runtime: Box<<span class="kw">dyn </span>TeaclaveRuntime + Send + Sync>, |
| seq: Sequence, |
| read_handles: HandleRegistry<Box<<span class="kw">dyn </span>std::io::Read>>, |
| write_handles: HandleRegistry<Box<<span class="kw">dyn </span>std::io::Write>>, |
| } |
| |
| <span class="kw">impl </span>Context { |
| <span class="kw">pub fn </span>new(runtime: Box<<span class="kw">dyn </span>TeaclaveRuntime + Send + Sync>) -> Context { |
| Context { |
| runtime, |
| seq: Sequence::new(<span class="number">1</span>, <span class="number">1024</span>), |
| read_handles: HandleRegistry::default(), |
| write_handles: HandleRegistry::default(), |
| } |
| } |
| |
| <span class="kw">fn </span>open_input(<span class="kw-2">&mut </span><span class="self">self</span>, fid: <span class="kw-2">&</span>str) -> anyhow::Result<FileHandle> { |
| <span class="kw">let </span>file = <span class="self">self</span>.runtime.open_input(fid)<span class="question-mark">?</span>; |
| <span class="kw">let </span>handle = <span class="self">self</span>.seq.next()<span class="question-mark">?</span>.into_read_handle(); |
| <span class="self">self</span>.read_handles.add(handle, file)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(handle) |
| } |
| |
| <span class="kw">fn </span>create_output(<span class="kw-2">&mut </span><span class="self">self</span>, fid: <span class="kw-2">&</span>str) -> anyhow::Result<FileHandle> { |
| <span class="kw">let </span>file = <span class="self">self</span>.runtime.create_output(fid)<span class="question-mark">?</span>; |
| <span class="kw">let </span>handle = <span class="self">self</span>.seq.next()<span class="question-mark">?</span>.into_write_handle(); |
| <span class="self">self</span>.write_handles.add(handle, file)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(handle) |
| } |
| |
| <span class="kw">fn </span>read_handle(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle, buf: <span class="kw-2">&mut </span>[u8]) -> anyhow::Result<usize> { |
| <span class="kw">let </span>file = <span class="self">self</span>.read_handles.get_mut(handle)<span class="question-mark">?</span>; |
| <span class="kw">let </span>size = file.read(buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(size) |
| } |
| |
| <span class="kw">fn </span>write_handle(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle, buf: <span class="kw-2">&</span>[u8]) -> anyhow::Result<usize> { |
| <span class="kw">let </span>file = <span class="self">self</span>.write_handles.get_mut(handle)<span class="question-mark">?</span>; |
| <span class="kw">let </span>size = file.write(buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(size) |
| } |
| |
| <span class="kw">fn </span>close_handle(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle) -> anyhow::Result<()> { |
| <span class="kw">if </span>handle.is_read_handle() { |
| <span class="self">self</span>.read_handles.remove(handle)<span class="question-mark">?</span>; |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.write_handles.remove(handle)<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">trait </span>HandleEncoding { |
| <span class="kw">fn </span>into_write_handle(<span class="self">self</span>) -> FileHandle; |
| <span class="kw">fn </span>into_read_handle(<span class="self">self</span>) -> FileHandle; |
| <span class="kw">fn </span>is_write_handle(<span class="kw-2">&</span><span class="self">self</span>) -> bool; |
| <span class="kw">fn </span>is_read_handle(<span class="kw-2">&</span><span class="self">self</span>) -> bool; |
| } |
| |
| <span class="kw">impl </span>HandleEncoding <span class="kw">for </span>FileHandle { |
| <span class="kw">fn </span>into_write_handle(<span class="self">self</span>) -> FileHandle { |
| <span class="macro">assert!</span>(<span class="self">self </span>< HANDLE_UPPDER_BOUND); |
| <span class="number">0x4000_0000 </span>| <span class="self">self |
| </span>} |
| |
| <span class="kw">fn </span>is_write_handle(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="number">0x4000_0000 </span>& <span class="self">self </span>> <span class="number">0 |
| </span>} |
| |
| <span class="kw">fn </span>into_read_handle(<span class="self">self</span>) -> FileHandle { |
| <span class="macro">assert!</span>(<span class="self">self </span>< HANDLE_UPPDER_BOUND); |
| <span class="self">self |
| </span>} |
| |
| <span class="kw">fn </span>is_read_handle(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| !<span class="self">self</span>.is_write_handle() |
| } |
| } |
| |
| <span class="kw">struct </span>Sequence { |
| range: std::ops::Range<FileHandle>, |
| } |
| |
| <span class="kw">impl </span>Sequence { |
| <span class="kw">fn </span>new(start: FileHandle, end: FileHandle) -> <span class="self">Self </span>{ |
| Sequence { |
| range: (start..end), |
| } |
| } |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> anyhow::Result<FileHandle> { |
| <span class="self">self</span>.range |
| .next() |
| .ok_or_else(|| <span class="macro">anyhow::anyhow!</span>(<span class="string">"Reached max sequence"</span>)) |
| } |
| } |
| |
| <span class="kw">type </span>FileHandle = i32; |
| <span class="kw">const </span>HANDLE_UPPDER_BOUND: FileHandle = <span class="number">0x1000_0000</span>; |
| |
| <span class="kw">struct </span>HandleRegistry<T> { |
| entries: HashMap<FileHandle, T>, |
| } |
| |
| <span class="kw">impl</span><T> HandleRegistry<T> { |
| <span class="kw">fn </span>add(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle, obj: T) -> anyhow::Result<()> { |
| <span class="macro">anyhow::ensure!</span>( |
| <span class="self">self</span>.entries.get(<span class="kw-2">&</span>handle).is_none(), |
| <span class="string">"Reuse a existed handle: {}"</span>, |
| handle |
| ); |
| <span class="self">self</span>.entries.insert(handle, obj); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>get_mut(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle) -> anyhow::Result<<span class="kw-2">&mut </span>T> { |
| <span class="self">self</span>.entries |
| .get_mut(<span class="kw-2">&</span>handle) |
| .ok_or_else(|| <span class="macro">anyhow::anyhow!</span>(<span class="string">"Get an invalid handle: {}"</span>, handle)) |
| } |
| |
| <span class="kw">fn </span>remove(<span class="kw-2">&mut </span><span class="self">self</span>, handle: FileHandle) -> anyhow::Result<()> { |
| <span class="self">self</span>.entries |
| .remove(<span class="kw-2">&</span>handle) |
| .ok_or_else(|| <span class="macro">anyhow::anyhow!</span>(<span class="string">"Remove an invalid handle: {}"</span>, handle))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><T> std::default::Default <span class="kw">for </span>HandleRegistry<T> { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| HandleRegistry { |
| entries: HashMap::<FileHandle, T>::new(), |
| } |
| } |
| } |
| |
| <span class="macro">thread_local! </span>{ |
| <span class="kw">pub static </span>CONTEXT: RefCell<<span class="prelude-ty">Option</span><Context>> = RefCell::new(<span class="prelude-val">None</span>); |
| } |
| |
| <span class="kw">pub fn </span>reset_thread_context() -> anyhow::Result<()> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| <span class="kw-2">*</span>ctx = <span class="prelude-val">None</span>; |
| <span class="prelude-val">Ok</span>(()) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>set_thread_context(context: Context) -> anyhow::Result<()> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_none(), <span class="string">"Context already initialized"</span>); |
| <span class="kw-2">*</span>ctx = <span class="prelude-val">Some</span>(context); |
| <span class="prelude-val">Ok</span>(()) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>rtc_open_input(fid: <span class="kw-2">&</span>str) -> anyhow::Result<FileHandle> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| ctx.as_mut().unwrap().open_input(fid) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>rtc_create_output(fid: <span class="kw-2">&</span>str) -> anyhow::Result<FileHandle> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| ctx.as_mut().unwrap().create_output(fid) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>rtc_read_handle(f: FileHandle, buf: <span class="kw-2">&mut </span>[u8]) -> anyhow::Result<usize> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| ctx.as_mut().unwrap().read_handle(f, buf) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>rtc_write_handle(f: FileHandle, buf: <span class="kw-2">&</span>[u8]) -> anyhow::Result<usize> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| ctx.as_mut().unwrap().write_handle(f, buf) |
| }) |
| } |
| |
| <span class="kw">pub fn </span>rtc_close_handle(f: FileHandle) -> anyhow::Result<()> { |
| CONTEXT.with(|ctx| { |
| <span class="kw">let </span><span class="kw-2">mut </span>ctx = ctx.borrow_mut(); |
| <span class="macro">anyhow::ensure!</span>(ctx.is_some(), <span class="string">"Context not initialized"</span>); |
| ctx.as_mut().unwrap().close_handle(f) |
| }) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::path::PathBuf; |
| <span class="kw">use </span>std::str::FromStr; |
| <span class="kw">use </span>teaclave_crypto::TeaclaveFile128Key; |
| <span class="kw">use </span>teaclave_runtime::RawIoRuntime; |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_types::hashmap; |
| <span class="kw">use </span>teaclave_types::FileAuthTag; |
| <span class="kw">use </span>teaclave_types::StagedFileInfo; |
| <span class="kw">use </span>teaclave_types::StagedFiles; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>(test_file_handle_encoding, test_rtc_api,) |
| } |
| |
| <span class="kw">fn </span>test_file_handle_encoding() { |
| <span class="macro">assert_eq!</span>(<span class="number">5</span>, <span class="number">5</span>.into_read_handle()); |
| <span class="macro">assert_eq!</span>(<span class="number">0x4000_0006</span>, <span class="number">6</span>.into_write_handle()); |
| <span class="macro">assert!</span>(<span class="number">0x4000_0000</span>.is_write_handle()); |
| <span class="macro">assert!</span>(!<span class="number">0x4000_0000</span>.is_read_handle()); |
| <span class="macro">assert!</span>(<span class="number">0x9</span>.is_read_handle()); |
| <span class="macro">assert!</span>(!<span class="number">0xff</span>.is_write_handle()); |
| } |
| |
| <span class="kw">fn </span>test_rtc_api() { |
| <span class="kw">let </span>input = PathBuf::from_str(<span class="string">"fixtures/functions/mesapy/input.txt"</span>).unwrap(); |
| <span class="kw">let </span>output = PathBuf::from_str(<span class="string">"fixtures/functions/mesapy/output.txt.out"</span>).unwrap(); |
| |
| <span class="kw">let </span>input_info = |
| StagedFileInfo::new(input, TeaclaveFile128Key::random(), FileAuthTag::mock()); |
| <span class="kw">let </span>output_info = |
| StagedFileInfo::new(output, TeaclaveFile128Key::random(), FileAuthTag::mock()); |
| |
| <span class="kw">let </span>in_fid = <span class="string">"in_f1"</span>; |
| <span class="kw">let </span>out_fid = <span class="string">"out_f1"</span>; |
| <span class="kw">let </span>input_files = StagedFiles::new(<span class="macro">hashmap!</span>(in_fid => input_info)); |
| <span class="kw">let </span>output_files = StagedFiles::new(<span class="macro">hashmap!</span>(out_fid => output_info)); |
| |
| <span class="kw">let </span>runtime = Box::new(RawIoRuntime::new(input_files, output_files)); |
| set_thread_context(Context::new(runtime)).unwrap(); |
| |
| <span class="kw">let </span>expected_input = <span class="string">b"Hello\nWorld"</span>; |
| <span class="kw">let </span>f = rtc_open_input(in_fid).unwrap(); |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0u8</span>; <span class="number">128</span>]; |
| <span class="kw">let </span>size = rtc_read_handle(f, <span class="kw-2">&mut </span>buf).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>expected_input[..], <span class="kw-2">&</span>buf[..size]); |
| |
| <span class="macro">assert!</span>(rtc_close_handle(f).is_ok()); |
| <span class="macro">assert!</span>(rtc_close_handle(f).is_err()); |
| |
| <span class="kw">let </span>f = rtc_create_output(out_fid).unwrap(); |
| <span class="kw">let </span>size = rtc_write_handle(f, <span class="kw-2">&</span>expected_input[..]).unwrap(); |
| <span class="macro">assert_eq!</span>(size, expected_input.len()); |
| |
| <span class="macro">assert!</span>(rtc_close_handle(f).is_ok()); |
| <span class="macro">assert!</span>(rtc_close_handle(f).is_err()); |
| reset_thread_context().unwrap(); |
| } |
| } |
| |
| <span class="kw">use </span>std::ffi::CStr; |
| |
| <span class="comment">// uint c_open_input(char* file_id, int* out_fd); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">extern </span><span class="string">"C" </span><span class="kw">fn </span>c_open_input(fid: <span class="kw-2">*mut </span>c_char, out_handle: <span class="kw-2">*mut </span>c_int) -> c_uint { |
| <span class="macro">debug!</span>(<span class="string">"c_open_input"</span>); |
| <span class="kw">let </span>fid = <span class="kw">unsafe </span>{ CStr::from_ptr(fid).to_string_lossy().into_owned() }; |
| <span class="kw">match </span>rtc_open_input(<span class="kw-2">&</span>fid) { |
| <span class="prelude-val">Ok</span>(handle) => { |
| <span class="kw">unsafe </span>{ |
| <span class="kw-2">*</span>out_handle = handle; |
| } |
| FFI_OK |
| } |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"c_open_input: {:?}, fid: {:?}"</span>, e, <span class="kw-2">&</span>fid); |
| FFI_FILE_ERROR |
| } |
| } |
| } |
| |
| <span class="doccomment">/// int teaclave_open_input(char* file_id); |
| /// |
| /// # Safety |
| /// FFI function and pointer arguments should be valid. |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>wasm_open_input(_exec_env: <span class="kw-2">*const </span>c_void, fid: <span class="kw-2">*mut </span>c_char) -> c_int { |
| <span class="macro">debug!</span>(<span class="string">"wasm_open_input"</span>); |
| <span class="kw">let </span>fid = <span class="kw">unsafe </span>{ CStr::from_ptr(fid).to_string_lossy().into_owned() }; |
| <span class="kw">match </span>rtc_open_input(<span class="kw-2">&</span>fid) { |
| <span class="prelude-val">Ok</span>(handle) => handle, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"wasm_open_input: {:?}"</span>, e); |
| FFI_FILE_ERROR_WASM |
| } |
| } |
| } |
| |
| <span class="comment">// uint c_create_output(char* file_id, int* out_fd); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">extern </span><span class="string">"C" </span><span class="kw">fn </span>c_create_output(fid: <span class="kw-2">*mut </span>c_char, out_handle: <span class="kw-2">*mut </span>c_int) -> c_uint { |
| <span class="macro">debug!</span>(<span class="string">"c_create_input"</span>); |
| <span class="kw">let </span>fid = <span class="kw">unsafe </span>{ CStr::from_ptr(fid).to_string_lossy().into_owned() }; |
| <span class="kw">match </span>rtc_create_output(<span class="kw-2">&</span>fid) { |
| <span class="prelude-val">Ok</span>(handle) => { |
| <span class="kw">unsafe </span>{ |
| <span class="kw-2">*</span>out_handle = handle; |
| } |
| FFI_OK |
| } |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"c_create_output: {:?}, fid: {:?}"</span>, e, fid); |
| FFI_FILE_ERROR |
| } |
| } |
| } |
| |
| <span class="doccomment">/// int teaclave_create_output(char* file_id); |
| /// |
| /// # Safety |
| /// FFI function and pointer arguments should be valid. |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>wasm_create_output(_exec_env: <span class="kw-2">*const </span>c_void, fid: <span class="kw-2">*mut </span>c_char) -> c_int { |
| <span class="macro">debug!</span>(<span class="string">"wasm_create_output"</span>); |
| <span class="kw">let </span>fid = <span class="kw">unsafe </span>{ CStr::from_ptr(fid).to_string_lossy().into_owned() }; |
| <span class="kw">match </span>rtc_create_output(<span class="kw-2">&</span>fid) { |
| <span class="prelude-val">Ok</span>(handle) => handle, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"wasm_create_output: {:?}"</span>, e); |
| FFI_FILE_ERROR_WASM |
| } |
| } |
| } |
| |
| <span class="comment">// uint c_read_file(int fd, void* out_buf, size_t buf_size, size_t* out_size_read); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">extern </span><span class="string">"C" </span><span class="kw">fn </span>c_read_file( |
| handle: c_int, |
| out_buf: <span class="kw-2">*mut </span>c_uchar, |
| buf_size: size_t, |
| out_buf_size_p: <span class="kw-2">*mut </span>size_t, |
| ) -> c_uint { |
| <span class="macro">debug!</span>(<span class="string">"c_read_file"</span>); |
| <span class="kw">let </span>out: <span class="kw-2">&mut </span>[u8] = <span class="kw">unsafe </span>{ slice::from_raw_parts_mut(out_buf, buf_size) }; |
| |
| <span class="kw">match </span>rtc_read_handle(handle, out) { |
| <span class="prelude-val">Ok</span>(size) => { |
| <span class="kw">unsafe </span>{ |
| <span class="kw-2">*</span>out_buf_size_p = size; |
| } |
| FFI_OK |
| } |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"c_read_file: {:?}"</span>, e); |
| FFI_FILE_ERROR |
| } |
| } |
| } |
| |
| <span class="doccomment">/// int teaclave_read_file(int fd, void* out_buf, int buf_size); |
| /// |
| /// # Safety |
| /// FFI function and pointer arguments should be valid. |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>wasm_read_file( |
| _exec_env: <span class="kw-2">*const </span>c_void, |
| handle: c_int, |
| out_buf: <span class="kw-2">*mut </span>c_uchar, |
| buf_size: c_int, |
| ) -> c_int { |
| <span class="macro">debug!</span>(<span class="string">"wasm_read_file"</span>); |
| <span class="kw">let </span>out: <span class="kw-2">&mut </span>[u8] = <span class="kw">unsafe </span>{ slice::from_raw_parts_mut(out_buf, buf_size <span class="kw">as </span>usize) }; |
| |
| <span class="kw">match </span>rtc_read_handle(handle, out) { |
| <span class="prelude-val">Ok</span>(size) => size <span class="kw">as </span>i32, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"wasm_read_file: {:?}"</span>, e); |
| FFI_FILE_ERROR_WASM |
| } |
| } |
| } |
| |
| <span class="comment">// uint c_write_file(int fd, void* buf, size_t buf_size, size_t* out_size_written); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">extern </span><span class="string">"C" </span><span class="kw">fn </span>c_write_file( |
| handle: c_int, |
| in_buf: <span class="kw-2">*mut </span>c_uchar, |
| buf_size: size_t, |
| buf_size_p: <span class="kw-2">*mut </span>size_t, |
| ) -> c_uint { |
| <span class="macro">debug!</span>(<span class="string">"c_write_file"</span>); |
| <span class="kw">let </span>in_buf: <span class="kw-2">&</span>[u8] = <span class="kw">unsafe </span>{ slice::from_raw_parts_mut(in_buf, buf_size) }; |
| |
| <span class="kw">match </span>rtc_write_handle(handle, in_buf) { |
| <span class="prelude-val">Ok</span>(size) => { |
| <span class="kw">unsafe </span>{ |
| <span class="kw-2">*</span>buf_size_p = size; |
| } |
| FFI_OK |
| } |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"c_write_file: {:?}"</span>, e); |
| FFI_FILE_ERROR |
| } |
| } |
| } |
| |
| <span class="doccomment">/// int teaclave_write_file(int fd, void* buf, size_t buf_size); |
| /// |
| /// # Safety |
| /// FFI function and pointer arguments should be valid. |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>wasm_write_file( |
| _exec_env: <span class="kw-2">*const </span>c_void, |
| handle: c_int, |
| in_buf: <span class="kw-2">*mut </span>c_uchar, |
| buf_size: c_int, |
| ) -> c_int { |
| <span class="macro">debug!</span>(<span class="string">"wasm_write_file"</span>); |
| <span class="kw">let </span>in_buf: <span class="kw-2">&</span>[u8] = <span class="kw">unsafe </span>{ slice::from_raw_parts_mut(in_buf, buf_size <span class="kw">as </span>usize) }; |
| |
| <span class="kw">match </span>rtc_write_handle(handle, in_buf) { |
| <span class="prelude-val">Ok</span>(size) => size <span class="kw">as </span>i32, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"wasm_write_file: {:?}"</span>, e); |
| FFI_FILE_ERROR_WASM |
| } |
| } |
| } |
| |
| <span class="comment">// uint c_close_file(int fd); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">extern </span><span class="string">"C" </span><span class="kw">fn </span>c_close_file(handle: c_int) -> c_uint { |
| <span class="macro">debug!</span>(<span class="string">"c_close_file"</span>); |
| <span class="kw">match </span>rtc_close_handle(handle) { |
| <span class="prelude-val">Ok</span>(size) => FFI_OK, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"c_close_file: {:?}"</span>, e); |
| FFI_FILE_ERROR |
| } |
| } |
| } |
| |
| <span class="comment">// int teaclave_close_file(int fd); |
| </span><span class="attribute">#[allow(unused)] |
| #[no_mangle] |
| </span><span class="kw">pub extern </span><span class="string">"C" </span><span class="kw">fn </span>wasm_close_file(_exec_env: <span class="kw-2">*const </span>c_void, handle: c_int) -> c_int { |
| <span class="macro">debug!</span>(<span class="string">"wasm_close_file"</span>); |
| <span class="kw">match </span>rtc_close_handle(handle) { |
| <span class="prelude-val">Ok</span>(size) => FFI_OK <span class="kw">as </span>i32, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"wasm_close_file: {:?}"</span>, e); |
| FFI_FILE_ERROR_WASM |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="teaclave_executor_context" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
