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.Dd September 22, 2020 25.Dt DEVCTL_PROCESS_RUNNING 9 26.Os 27.Sh NAME 28.Nm devctl_process_running 29.Nd Returns true when devctl has a consumer process running 30.Sh SYNOPSIS 31.In sys/devctl.h 32.Ft bool 33.Fn devctl_process_running "void" 34.Sh DESCRIPTION 35The 36.Nm 37call returns 38.Vt true 39when a process has the devctl device open for 40reading, and 41.Vt false 42otherwise. 43One can assume from this that the default 44.Xr devd 8 45or similar is running when 46.Vt true 47is returned. 48Some subsystems will send a message and allow userland to do something 49before proceeding with a default action if there's a timeout. 50This call allows those subsystems to do the default action right away 51when no process is running. 52.Sh SEE ALSO 53.Xr devd 8 54.Sh AUTHORS 55This manual page was written by 56.An M. Warner Losh 57