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</pre><pre class="rust ">
<span class="doccomment">//! Reboot/shutdown or enable/disable Ctrl-Alt-Delete.</span>
<span class="kw">use</span> {<span class="ident">Errno</span>, <span class="ident">Error</span>, <span class="prelude-ty">Result</span>};
<span class="kw">use</span> <span class="ident">libc</span>;
<span class="kw">use</span> <span class="ident">void</span>::<span class="ident">Void</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>;
<span class="doccomment">/// How exactly should the system be rebooted.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See [`set_cad_enabled()`](fn.set_cad_enabled.html) for</span>
<span class="doccomment">/// enabling/disabling Ctrl-Alt-Delete.</span>
<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">i32</span>)]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">RebootMode</span> {
<span class="ident">RB_HALT_SYSTEM</span> <span class="op">=</span> <span class="ident">libc</span>::<span class="ident">RB_HALT_SYSTEM</span>,
<span class="ident">RB_KEXEC</span> <span class="op">=</span> <span class="ident">libc</span>::<span class="ident">RB_KEXEC</span>,
<span class="ident">RB_POWER_OFF</span> <span class="op">=</span> <span class="ident">libc</span>::<span class="ident">RB_POWER_OFF</span>,
<span class="ident">RB_AUTOBOOT</span> <span class="op">=</span> <span class="ident">libc</span>::<span class="ident">RB_AUTOBOOT</span>,
<span class="comment">// we do not support Restart2,</span>
<span class="ident">RB_SW_SUSPEND</span> <span class="op">=</span> <span class="ident">libc</span>::<span class="ident">RB_SW_SUSPEND</span>,
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">reboot</span>(<span class="ident">how</span>: <span class="ident">RebootMode</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">Void</span><span class="op">&gt;</span> {
<span class="kw">unsafe</span> {
<span class="ident">libc</span>::<span class="ident">reboot</span>(<span class="ident">how</span> <span class="kw">as</span> <span class="ident">libc</span>::<span class="ident">c_int</span>)
};
<span class="prelude-val">Err</span>(<span class="ident">Error</span>::<span class="ident">Sys</span>(<span class="ident">Errno</span>::<span class="ident">last</span>()))
}
<span class="doccomment">/// Enable or disable the reboot keystroke (Ctrl-Alt-Delete).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Corresponds to calling `reboot(RB_ENABLE_CAD)` or `reboot(RB_DISABLE_CAD)` in C.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_cad_enabled</span>(<span class="ident">enable</span>: <span class="ident">bool</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span>()<span class="op">&gt;</span> {
<span class="kw">let</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">enable</span> {
<span class="ident">libc</span>::<span class="ident">RB_ENABLE_CAD</span>
} <span class="kw">else</span> {
<span class="ident">libc</span>::<span class="ident">RB_DISABLE_CAD</span>
};
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="kw">unsafe</span> {
<span class="ident">libc</span>::<span class="ident">reboot</span>(<span class="ident">cmd</span>)
};
<span class="ident">Errno</span>::<span class="ident">result</span>(<span class="ident">res</span>).<span class="ident">map</span>(<span class="ident">drop</span>)
}
</pre>
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