4d1bad3c62
I snagged the license boiler plate. Fix that. also, it's spelled .Va not .Vn. Plus " quoting issues. Noticed by: rgrimes, xtouqh at hotmail dot com
59 lines
2.1 KiB
Groff
59 lines
2.1 KiB
Groff
.\"
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.\" Copyright (c) 2020 M Warner Losh
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd September 22, 2020
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.Dt DEVCTL_PROCESS_RUNNING 9
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.Os
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.Sh NAME
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.Nm devctl_process_running
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.Nd Returns true when devctl has a consumer process running
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.Sh SYNOPSIS
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.In sys/devctl.h
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.Ft bool
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.Fn devctl_process_running "void"
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.Sh DESCRIPTION
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The
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.Nm
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call returns
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.Vt true
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when a process has the devctl device open for
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reading, and
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.Vt false
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otherwise.
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One can assume from this that the default
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.Xr devd 8
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or similar is running when
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.Vt true
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is returned.
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Some subsystems will send a message and allow userland to do something
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before proceeding with a default action if there's a timeout.
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This call allows those subsystems to do the default action right away
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when no process is running.
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.Sh SEE ALSO
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.Xr devd 8
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.Sh AUTHORS
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This manual page was written by
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.An M. Warner Losh
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