1.\" $NetBSD: proc_find.9,v 1.1 2010/07/01 14:54:44 jruoho Exp $ 2.\" 3.\" Copyright (c) 2010 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Jukka Ruohonen. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd July 1, 2010 31.Dt PROC_FIND 9 32.Os 33.Sh NAME 34.Nm proc_find , 35.Nm pgrp_find 36.Nd find process or process group 37.Sh SYNOPSIS 38.In sys/proc.h 39.Ft struct proc * 40.Fn proc_find "pid_t pid" 41.Ft struct pgrp * 42.Fn pgrp_find "pid_t pgid" 43.Pp 44.Va extern kmutex_t *proc_lock; 45.Sh DESCRIPTION 46The 47.Fn proc_find 48and 49.Fn pgrp_find 50functions retrieve process and process group structures from process 51.Tn ID 52.Fa pid 53and process group 54.Tn ID 55.Fa pgid . 56Both functions must be called by holding a 57.Xr mutex 9 58on 59.Va proc_lock . 60.Sh RETURN VALUES 61Upon successful completion, the described functions return a pointer to either 62.Em struct proc 63or 64.Em struct pgrp . 65Otherwise, if the requested 66.Tn ID 67was not found, 68.Dv NULL 69is returned. 70.Sh SEE ALSO 71.Xr curproc 9 72