150 lines
4.8 KiB
Groff
150 lines
4.8 KiB
Groff
.\" $NetBSD: powerd.8,v 1.9 2006/12/14 02:34:32 reed Exp $
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.\"
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.\" Copyright (c) 2003 Wasabi Systems, Inc.
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.\" All rights reserved.
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.\"
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.\" Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed for the NetBSD Project by
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.\" Wasabi Systems, Inc.
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.\" 4. The name of Wasabi Systems, Inc. may not be used to endorse
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.\" or promote products derived from this software without specific prior
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.\" written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd May 3, 2004
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.Dt POWERD 8
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.Os
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.Sh NAME
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.Nm powerd
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.Nd power management daemon for sysmon
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.Sh SYNOPSIS
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.Nm
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.Op Fl d
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.Sh DESCRIPTION
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.Nm
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acts upon power management events posted by the kernel's power management
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facility.
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When events are posted,
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.Nm
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translates the event into a script name and a list of arguments.
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.Nm
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then runs the script in order to implement the power management policy
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defined by the system administrator.
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.Pp
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.Nm
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supports the following option:
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.Bl -tag -width xxxx
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.It Fl d
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Enable debugging mode.
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Verbose messages will be sent to stderr and
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.Nm
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will stay in the foreground of the controlling terminal.
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.El
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.Sh CONFIGURATION SCRIPTS
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All of
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.Nm Ns 's
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configuration is encapsulated into scripts that are run when power
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management events occur.
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.Nm
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will look for these scripts in two locations.
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The first location is
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.Pa /etc/powerd/scripts/\*[Lt]power_type\*[Gt] ,
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where
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.Aq Pa power_type
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is defined by the power management mechanism supported by the system,
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e.g.,
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.Dq apm
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or
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.Dq acpi .
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If the script is not found in the first location,
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.Nm
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looks in
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.Pa /etc/powerd/scripts .
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.Pp
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Configuration scripts are run synchronously, i.e.,
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.Nm
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will start the script and wait for its completion before it handles
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the next event.
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.Pp
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Configuration scripts are called with different arguments, depending on
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the script class.
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These classes are described in the following sections.
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.Ss POWER SWITCH SCRIPTS
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Power switch scripts are called when a state change event occurs on
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a power switch device.
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Power switch scripts are called with two arguments: the device with which
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the device is associated, and the event type.
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.Pp
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The following power switch script names are defined:
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.Bl -tag -width "power_button"
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.It power_button
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This script is called when an event occurs on a power button device.
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.It reset_button
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This script is called when an event occurs on a reset button device.
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.It sleep_button
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This script is called when an event occurs on a sleep button device.
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.It lid_switch
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This script is called when an event occurs on a lid switch device.
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.It acadapter
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This script is called when an online or offline event occurs on an AC adapter device.
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.El
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.Pp
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The following events are defined for power switch devices:
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.Bl -tag -width "released"
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.It pressed
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The button was pressed, the lid closed, or the AC adapter connected.
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.It released
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The button was released, the lid opened, or the AC adapter disconnected.
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Note that power and sleep button devices usually do not
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post this type of event.
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.El
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.Pp
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The following is an example of how a power button script might be invoked
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when a power button is pressed by the operator:
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.Bd -literal -offset indent
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/etc/powerd/scripts/power_button acpi0 pressed
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.Ed
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr acpiacad 4 ,
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.Xr acpibut 4 ,
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.Xr acpilid 4 ,
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.Xr apm 4
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.\" .Xr sysmon 4
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.Sh HISTORY
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.Nm
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first appeared in
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.Nx 2.0 .
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.Sh AUTHORS
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.Nm
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was written by
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.An Jason R. Thorpe
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.Aq thorpej@wasabisystems.com
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and contributed by Wasabi Systems, Inc.
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.Sh BUGS
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Due to its synchronous nature
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.Nm
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cannot be trusted to handle events within a certain time.
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