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-</pre><pre class="rust"><code><span class="doccomment">//! KVM system ioctls.</span>
+<!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 `src/kvm.rs`."><title>kvm.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-cb6f1f67f1bcd037.css" id="mainThemeStyle"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="kvm_rs" data-themes="" data-resource-suffix="" data-rustdoc-version="1.73.0 (cc66ad468 2023-10-03)" data-channel="1.73.0" data-search-js="search-6dfdfced5eff6596.js" data-settings-js="settings-de11bff964e9d4e5.js" data-settings-css="settings-8c76f75bfb6bd192.css" data-theme-light-css="light-1596385f77d47ef2.css" data-theme-dark-css="dark-0a43001d3fc2282c.css" data-theme-ayu-css="ayu-fd19013d6ce078bf.css" ><script src="../../static.files/storage-db41da1a38ea3cb8.js"></script><script defer src="../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-0795b7d26be81095.js"></script><noscript><link rel="stylesheet" media="(prefers-color-scheme:light)" href="../../static.files/light-1596385f77d47ef2.css"><link rel="stylesheet" media="(prefers-color-scheme:dark)" href="../../static.files/dark-0a43001d3fc2282c.css"><link rel="stylesheet" href="../../static.files/noscript-cffde32267a19fd6.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../kvm_rs/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" 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="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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+</pre></div><pre class="rust"><code><span class="doccomment">//! KVM system ioctls.
-<span class="kw">use</span> <span class="ident">std::fs</span>;
-<span class="kw">use</span> <span class="ident">std::io</span>;
-<span class="kw">use</span> <span class="ident">std::os::unix::io::FromRawFd</span>;
+</span><span class="kw">use </span>std::fs;
+<span class="kw">use </span>std::io;
+<span class="kw">use </span>std::os::unix::io::FromRawFd;
-<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::cap</span>::{<span class="ident">CapBool</span>, <span class="ident">CapInt</span>};
-<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::vm::Vm</span>;
-<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">ioctl</span>, <span class="ident">kvm_sys</span>, <span class="ident">libcret</span>};
+<span class="kw">use </span><span class="kw">crate</span>::cap::{CapBool, CapInt};
+<span class="kw">use </span><span class="kw">crate</span>::vm::Vm;
+<span class="kw">use crate</span>::{ioctl, kvm_sys, libcret};
-<span class="doccomment">/// Wrapper for `/dev/kvm` ioctls.</span>
-<span class="doccomment">///</span>
-<span class="doccomment">/// Representation of the file descriptor obtained by opening `/dev/kvm`.</span>
-<span class="doccomment">/// This wrapper provides access to the `system ioctls` as described in [KVM API][kvm].</span>
-<span class="doccomment">///</span>
-<span class="doccomment">/// [kvm]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#general-description</span>
-<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Kvm</span> {
- <span class="ident">kvm</span>: <span class="ident">fs::File</span>,
+<span class="doccomment">/// Wrapper for `/dev/kvm` ioctls.
+///
+/// Representation of the file descriptor obtained by opening `/dev/kvm`.
+/// This wrapper provides access to the `system ioctls` as described in [KVM API][kvm].
+///
+/// [kvm]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#general-description
+</span><span class="kw">pub struct </span>Kvm {
+ kvm: fs::File,
}
-<span class="kw">impl</span> <span class="ident">Kvm</span> {
- <span class="doccomment">/// Open the `/dev/kvm` device.</span>
- <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() -&gt; <span class="ident">io::Result</span><span class="op">&lt;</span><span class="ident">Kvm</span><span class="op">&gt;</span> {
- <span class="kw">let</span> <span class="ident">kvm</span> <span class="op">=</span> <span class="ident">libcret</span>(<span class="kw">unsafe</span> {
- <span class="ident">libc::open</span>(<span class="string">&quot;/dev/kvm\0&quot;</span>.<span class="ident">as_ptr</span>().<span class="ident">cast</span>(), <span class="ident">libc::O_RDWR</span> <span class="op">|</span> <span class="ident">libc::O_CLOEXEC</span>)
+<span class="kw">impl </span>Kvm {
+ <span class="doccomment">/// Open the `/dev/kvm` device.
+ </span><span class="kw">pub fn </span>new() -&gt; io::Result&lt;Kvm&gt; {
+ <span class="kw">let </span>kvm = libcret(<span class="kw">unsafe </span>{
+ libc::open(<span class="string">&quot;/dev/kvm\0&quot;</span>.as_ptr().cast(), libc::O_RDWR | libc::O_CLOEXEC)
})
- .<span class="ident">map</span>(<span class="op">|</span><span class="ident">fd</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">fs::File::from_raw_fd</span>(<span class="ident">fd</span>) })<span class="question-mark">?</span>;
+ .map(|fd| <span class="kw">unsafe </span>{ fs::File::from_raw_fd(fd) })<span class="question-mark">?</span>;
<span class="macro">assert_eq!</span>(
- <span class="ident">kvm_sys::KVM_API_VERSION</span>,
- <span class="ident">ioctl</span>(<span class="kw-2">&amp;</span><span class="ident">kvm</span>, <span class="ident">kvm_sys::KVM_GET_API_VERSION</span>, <span class="number">0</span>)<span class="question-mark">?</span>
- );
+ kvm_sys::KVM_API_VERSION,
+ ioctl(<span class="kw-2">&amp;</span>kvm, kvm_sys::KVM_GET_API_VERSION, <span class="number">0</span>)<span class="question-mark">?
+ </span>);
- <span class="prelude-val">Ok</span>(<span class="ident">Kvm</span> { <span class="ident">kvm</span> })
+ <span class="prelude-val">Ok</span>(Kvm { kvm })
}
- <span class="kw">fn</span> <span class="ident">get_vpcu_mmap_size</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">io::Result</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span> {
- <span class="ident">ioctl</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">kvm</span>, <span class="ident">kvm_sys::KVM_GET_VCPU_MMAP_SIZE</span>, <span class="number">0</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">size</span><span class="op">|</span> <span class="ident">size</span> <span class="kw">as</span> <span class="ident">usize</span>)
+ <span class="kw">fn </span>get_vpcu_mmap_size(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; io::Result&lt;usize&gt; {
+ ioctl(<span class="kw-2">&amp;</span><span class="self">self</span>.kvm, kvm_sys::KVM_GET_VCPU_MMAP_SIZE, <span class="number">0</span>).map(|size| size <span class="kw">as </span>usize)
}
- <span class="doccomment">/// Create a new virtual machine with the [`KVM_CREATE_VM`][kvm-create-vm] ioctl.</span>
- <span class="doccomment">/// Returns a wrapper [`vm::Vm`][crate::vm::Vm] representing the VM.</span>
- <span class="doccomment">///</span>
- <span class="doccomment">/// [kvm-create-vm]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-create-vm</span>
- <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">create_vm</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">io::Result</span><span class="op">&lt;</span><span class="ident">Vm</span><span class="op">&gt;</span> {
- <span class="kw">let</span> <span class="ident">vm</span> <span class="op">=</span> <span class="ident">ioctl</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">kvm</span>, <span class="ident">kvm_sys::KVM_CREATE_VM</span>, <span class="number">0</span> <span class="comment">/* machine id */</span>)
- .<span class="ident">map</span>(<span class="op">|</span><span class="ident">fd</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">fs::File::from_raw_fd</span>(<span class="ident">fd</span>) })<span class="question-mark">?</span>;
+ <span class="doccomment">/// Create a new virtual machine with the [`KVM_CREATE_VM`][kvm-create-vm] ioctl.
+ /// Returns a wrapper [`vm::Vm`][crate::vm::Vm] representing the VM.
+ ///
+ /// [kvm-create-vm]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-create-vm
+ </span><span class="kw">pub fn </span>create_vm(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; io::Result&lt;Vm&gt; {
+ <span class="kw">let </span>vm = ioctl(<span class="kw-2">&amp;</span><span class="self">self</span>.kvm, kvm_sys::KVM_CREATE_VM, <span class="number">0 </span><span class="comment">/* machine id */</span>)
+ .map(|fd| <span class="kw">unsafe </span>{ fs::File::from_raw_fd(fd) })<span class="question-mark">?</span>;
- <span class="kw">let</span> <span class="ident">vcpu_mmap_size</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_vpcu_mmap_size</span>()<span class="question-mark">?</span>;
+ <span class="kw">let </span>vcpu_mmap_size = <span class="self">self</span>.get_vpcu_mmap_size()<span class="question-mark">?</span>;
- <span class="prelude-val">Ok</span>(<span class="ident">Vm::new</span>(<span class="ident">vm</span>, <span class="ident">vcpu_mmap_size</span>))
+ <span class="prelude-val">Ok</span>(Vm::new(vm, vcpu_mmap_size))
}
- <span class="doccomment">/// Check availability of an extension with the [`KVM_CHECK_EXTENSION`][kvm-check-extension]</span>
- <span class="doccomment">/// ioctl.</span>
- <span class="doccomment">///</span>
- <span class="doccomment">/// [kvm-check-extension]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-check-extension</span>
- <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">check_extenstion</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">cap</span>: <span class="ident">CapBool</span>) -&gt; <span class="ident">bool</span> {
- <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">ioctl</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">kvm</span>, <span class="ident">kvm_sys::KVM_CHECK_EXTENSION</span>, <span class="ident">cap</span>.<span class="ident">into</span>());
+ <span class="doccomment">/// Check availability of an extension with the [`KVM_CHECK_EXTENSION`][kvm-check-extension]
+ /// ioctl.
+ ///
+ /// [kvm-check-extension]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-check-extension
+ </span><span class="kw">pub fn </span>check_extenstion(<span class="kw-2">&amp;</span><span class="self">self</span>, cap: CapBool) -&gt; bool {
+ <span class="kw">let </span>ret = ioctl(<span class="kw-2">&amp;</span><span class="self">self</span>.kvm, kvm_sys::KVM_CHECK_EXTENSION, cap.into());
- <span class="macro">matches!</span>(<span class="ident">ret</span>, <span class="prelude-val">Ok</span>(<span class="ident">ret</span>) <span class="kw">if</span> <span class="ident">ret</span> <span class="op">&gt;</span> <span class="number">0</span>)
+ <span class="macro">matches!</span>(ret, <span class="prelude-val">Ok</span>(ret) <span class="kw">if </span>ret &gt; <span class="number">0</span>)
}
- <span class="doccomment">/// Check availability of an extension with the [`KVM_CHECK_EXTENSION`][kvm-check-extension]</span>
- <span class="doccomment">/// ioctl.</span>
- <span class="doccomment">///</span>
- <span class="doccomment">/// [kvm-check-extension]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-check-extension</span>
- <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">check_extenstion_int</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">cap</span>: <span class="ident">CapInt</span>) -&gt; <span class="ident">i32</span> {
- <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">ioctl</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">kvm</span>, <span class="ident">kvm_sys::KVM_CHECK_EXTENSION</span>, <span class="ident">cap</span>.<span class="ident">into</span>());
+ <span class="doccomment">/// Check availability of an extension with the [`KVM_CHECK_EXTENSION`][kvm-check-extension]
+ /// ioctl.
+ ///
+ /// [kvm-check-extension]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-check-extension
+ </span><span class="kw">pub fn </span>check_extenstion_int(<span class="kw-2">&amp;</span><span class="self">self</span>, cap: CapInt) -&gt; i32 {
+ <span class="kw">let </span>ret = ioctl(<span class="kw-2">&amp;</span><span class="self">self</span>.kvm, kvm_sys::KVM_CHECK_EXTENSION, cap.into());
- <span class="ident">ret</span>.<span class="ident">unwrap_or</span>(<span class="number">0</span>)
+ ret.unwrap_or(<span class="number">0</span>)
}
}
-</code></pre></div>
-</section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="kvm_rs" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.63.0 (4b91a6ea7 2022-08-08)" ></div>
-</body></html> \ No newline at end of file
+</code></pre></div></section></main></body></html> \ No newline at end of file