1.\" 2.\" Copyright (c) 2020 M Warner Losh 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 14.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 17.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23.\" 24.\" $FreeBSD$ 25.\" 26.Dd September 22, 2020 27.Dt DEVCTL_PROCESS_RUNNING 9 28.Os 29.Sh NAME 30.Nm devctl_process_running 31.Nd Returns true when devctl has a consumer process running 32.Sh SYNOPSIS 33.In sys/devctl.h 34.Ft bool 35.Fn devctl_process_running "void" 36.Sh DESCRIPTION 37The 38.Nm 39call returns 40.Vt true 41when a process has the devctl device open for 42reading, and 43.Vt false 44otherwise. 45One can assume from this that the default 46.Xr devd 8 47or similar is running when 48.Vt true 49is returned. 50Some subsystems will send a message and allow userland to do something 51before proceeding with a default action if there's a timeout. 52This call allows those subsystems to do the default action right away 53when no process is running. 54.Sh SEE ALSO 55.Xr devd 8 56.Sh AUTHORS 57This manual page was written by 58.An M. Warner Losh 59