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+.\"	$OpenBSD: pfind.9,v 1.1 1999/09/02 17:24:35 espie Exp $
+.\"
+.\" Copyright (c) 1999 Marc Espie
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Marc Espie
+.\"      for the OpenBSD Project.
+.\" 3. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd September 1, 1999
+.Dt PFIND 9
+.Os
+.Sh NAME
+.Nm pfind ,
+.Nm pgfind
+.Nd find process / process group by number
+.Sh SYNOPSIS
+.Fd #include <sys/cdefs.h>
+.Fd #include <sys/proc.h>
+.Ft "struct proc *"
+.Fn pfind "pid_t pid"
+.Ft "struct pgrp *"
+.Fn pgfind "pid_t pgid"
+.Sh DESCRIPTION
+The 
+.Fn pfind
+and 
+.Fn pgfind
+functions retrieve process and progress group structures from process and 
+process group ids.
+.Pp
+Both functions return NULL if the requested id can't be found.
+.Sh CODE REFERENCES
+Those functions are implemented in the file
+.Pa sys/kern/kern_proc.c .
+