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| author | johannst <johannst@users.noreply.github.com> | 2023-11-15 21:40:27 +0000 |
|---|---|---|
| committer | johannst <johannst@users.noreply.github.com> | 2023-11-15 21:40:27 +0000 |
| commit | 091d408a87d0f73f1c4e0166849ca9a566f005e0 (patch) | |
| tree | 894908b3a5fd80c94bc33e832d4168d73b4f2ba1 /src/kvm_rs/kvm.rs.html | |
| parent | c44661b4d904f8be227faef8f84ddb22934a01e8 (diff) | |
| download | mini-kvm-rs-gh-pages.tar.gz mini-kvm-rs-gh-pages.zip | |
deploy: f52d556e0e1bf2350b3b42cff198550a267ceb0bgh-pages
Diffstat (limited to 'src/kvm_rs/kvm.rs.html')
| -rw-r--r-- | src/kvm_rs/kvm.rs.html | 256 |
1 files changed, 124 insertions, 132 deletions
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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 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id="10">10</a> +<a href="#11" id="11">11</a> +<a href="#12" id="12">12</a> +<a href="#13" id="13">13</a> +<a href="#14" id="14">14</a> +<a href="#15" id="15">15</a> +<a href="#16" id="16">16</a> +<a href="#17" id="17">17</a> +<a href="#18" id="18">18</a> +<a href="#19" id="19">19</a> +<a href="#20" id="20">20</a> +<a href="#21" id="21">21</a> +<a href="#22" id="22">22</a> +<a href="#23" id="23">23</a> +<a href="#24" id="24">24</a> +<a href="#25" id="25">25</a> +<a href="#26" id="26">26</a> +<a href="#27" id="27">27</a> +<a href="#28" id="28">28</a> +<a href="#29" id="29">29</a> +<a href="#30" id="30">30</a> +<a href="#31" id="31">31</a> +<a href="#32" id="32">32</a> +<a href="#33" id="33">33</a> +<a href="#34" id="34">34</a> +<a href="#35" id="35">35</a> +<a href="#36" id="36">36</a> +<a href="#37" id="37">37</a> +<a href="#38" id="38">38</a> +<a href="#39" id="39">39</a> +<a href="#40" id="40">40</a> +<a href="#41" id="41">41</a> +<a href="#42" id="42">42</a> +<a href="#43" id="43">43</a> +<a href="#44" id="44">44</a> +<a href="#45" id="45">45</a> +<a href="#46" id="46">46</a> +<a href="#47" id="47">47</a> +<a href="#48" id="48">48</a> +<a href="#49" id="49">49</a> +<a href="#50" id="50">50</a> +<a href="#51" id="51">51</a> +<a href="#52" id="52">52</a> +<a href="#53" id="53">53</a> +<a href="#54" id="54">54</a> +<a href="#55" id="55">55</a> +<a href="#56" id="56">56</a> +<a href="#57" id="57">57</a> +<a href="#58" id="58">58</a> +<a href="#59" id="59">59</a> +<a href="#60" id="60">60</a> +<a href="#61" id="61">61</a> +<a href="#62" id="62">62</a> +<a href="#63" id="63">63</a> +<a href="#64" id="64">64</a> +<a href="#65" id="65">65</a> +<a href="#66" id="66">66</a> +<a href="#67" id="67">67</a> +<a href="#68" id="68">68</a> +<a href="#69" id="69">69</a> +<a href="#70" id="70">70</a> +<a href="#71" id="71">71</a> +<a href="#72" id="72">72</a> +<a href="#73" id="73">73</a> +</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>() -> <span class="ident">io::Result</span><span class="op"><</span><span class="ident">Kvm</span><span class="op">></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">"/dev/kvm\0"</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() -> io::Result<Kvm> { + <span class="kw">let </span>kvm = libcret(<span class="kw">unsafe </span>{ + libc::open(<span class="string">"/dev/kvm\0"</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">&</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">&</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">&</span><span class="self">self</span>) -> <span class="ident">io::Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { - <span class="ident">ioctl</span>(<span class="kw-2">&</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">&</span><span class="self">self</span>) -> io::Result<usize> { + ioctl(<span class="kw-2">&</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">&</span><span class="self">self</span>) -> <span class="ident">io::Result</span><span class="op"><</span><span class="ident">Vm</span><span class="op">></span> { - <span class="kw">let</span> <span class="ident">vm</span> <span class="op">=</span> <span class="ident">ioctl</span>(<span class="kw-2">&</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">&</span><span class="self">self</span>) -> io::Result<Vm> { + <span class="kw">let </span>vm = ioctl(<span class="kw-2">&</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">&</span><span class="self">self</span>, <span class="ident">cap</span>: <span class="ident">CapBool</span>) -> <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">&</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">&</span><span class="self">self</span>, cap: CapBool) -> bool { + <span class="kw">let </span>ret = ioctl(<span class="kw-2">&</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">></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 > <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">&</span><span class="self">self</span>, <span class="ident">cap</span>: <span class="ident">CapInt</span>) -> <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">&</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">&</span><span class="self">self</span>, cap: CapInt) -> i32 { + <span class="kw">let </span>ret = ioctl(<span class="kw-2">&</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>
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