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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
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+<table class="head">
+ <tr>
+ <td class="head-ltitle">PROC_FIND(9)</td>
+ <td class="head-vol">Kernel Developer's Manual</td>
+ <td class="head-rtitle">PROC_FIND(9)</td>
+ </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">proc_find</code>,
+ <code class="Nm">pgrp_find</code> &#x2014; <span class="Nd">find process or
+ process group</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp"><code class="In">#include
+ &lt;<a class="In">sys/proc.h</a>&gt;</code></p>
+<p class="Pp"><var class="Ft">struct proc *</var>
+ <br/>
+ <code class="Fn">proc_find</code>(<var class="Fa" style="white-space: nowrap;">pid_t
+ pid</var>);</p>
+<p class="Pp"><var class="Ft">struct pgrp *</var>
+ <br/>
+ <code class="Fn">pgrp_find</code>(<var class="Fa" style="white-space: nowrap;">pid_t
+ pgid</var>);</p>
+<p class="Pp"><var class="Va">extern kmutex_t *proc_lock;</var></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The
+ <a class="permalink" href="#proc_find"><code class="Fn" id="proc_find">proc_find</code></a>()
+ and
+ <a class="permalink" href="#pgrp_find"><code class="Fn" id="pgrp_find">pgrp_find</code></a>()
+ functions retrieve process and process group structures from process ID
+ <var class="Fa">pid</var> and process group ID <var class="Fa">pgid</var>.
+ Both functions must be called by holding a <a class="Xr">mutex(9)</a> on
+ <var class="Va">proc_lock</var>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
+ VALUES</a></h1>
+<p class="Pp">Upon successful completion, the described functions return a
+ pointer to either <i class="Em">struct proc</i> or <i class="Em">struct
+ pgrp</i>. Otherwise, if the requested ID was not found,
+ <code class="Dv">NULL</code> is returned.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">curproc(9)</a></p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">July 1, 2010</td>
+ <td class="foot-os">NetBSD 10.1</td>
+ </tr>
+</table>