675 lines
16 KiB
Groff
675 lines
16 KiB
Groff
.\"
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.\" Copyright (c) 2002 M. Warner Losh
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.\" All rights reserved.
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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. The name of the author may not be used to endorse or promote products
|
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.\" The section on comments was taken from named.conf.5, which has the
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.\" following copyright:
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.\" Copyright (c) 1999-2000 by Internet Software Consortium
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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.\" ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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.\" CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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.\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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.\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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.\" SOFTWARE.
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.\"
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.Dd May 31, 2019
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.Dt DEVD.CONF 5
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.Os
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.Sh NAME
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.Nm devd.conf
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.Nd configuration file for
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.Xr devd 8
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.Sh DESCRIPTION
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.Ss General Syntax
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A
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.Xr devd 8
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configuration consists of two general features, statements
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and comments.
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All statements end with a semicolon.
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Many statements can contain substatements, which are also
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terminated with a semicolon.
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.Pp
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The following statements are supported:
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.Bl -tag -width ".Ic options"
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.It Ic attach
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Specifies various matching criteria and actions to perform when
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a newly attached device matches said criteria.
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.It Ic detach
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Specifies various matching criteria and actions to perform when
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a newly detached device matches said criteria.
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.It Ic nomatch
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Specifies various matching criteria and actions to perform when
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no device driver currently loaded in the kernel claims a (new)
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device.
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.It Ic notify
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Specifies various matching criteria and actions to perform when the kernel
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sends an event notification to userland.
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.It Ic options
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Specifies various options and parameters for the operation of
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.Xr devd 8 .
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.El
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.Pp
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Statements may occur in any order in the configuration file, and may be
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repeated as often as required.
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Further details on the syntax and meaning of each statement and their
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substatements are explained below.
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.Pp
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Each statement, except
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.Ic options
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has a priority (an arbitrary number) associated with it, where
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.Ql 0
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is defined as the lowest priority.
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If two statements match the same event, only the action of the statement with
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highest priority will be executed.
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In this way generic statements can be overridden for devices or
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notifications that require special attention.
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.Pp
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The general syntax of a statement is:
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.Bd -literal -offset indent
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statement priority {
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substatement "value";
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...
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substatement "value";
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};
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.Ed
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.Ss Sub-statements
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The following sub-statements are supported within the
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.Ic options
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statement.
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.Bl -tag -width ".Ic directory"
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.It Ic directory Qq Ar /some/path ;
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Adds the given directory to the list of directories from which
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.Xr devd 8
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will read all files named "*.conf" as further
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configuration files.
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Any number of
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.Ic directory
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statements can be used.
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.It Ic pid-file Qq Pa /var/run/devd.pid ;
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Specifies PID file.
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.It Ic set Ar regexp-name Qq Ar (some|regexp) ;
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Creates a regular expression and assigns it to the variable
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.Ar regexp-name .
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The variable is available throughout the rest of
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the configuration file.
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If the string begins with
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.Ql \&! ,
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it matches if the regular expression formed by the rest of the string
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does not match.
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All regular expressions have an implicit
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.Ql ^$
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around them.
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.El
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.Pp
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The following sub-statements are supported within the
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.Ic attach
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and
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.Ic detach
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statements.
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.Bl -tag -width ".Ic directory"
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.It Ic action Qq Ar command ;
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Command to execute upon a successful match.
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Example
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.Dq Li "/etc/pccard_ether $device-name start" .
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.It Ic class Qq Ar string ;
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This is shorthand for
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.Dq Ic match Qo Li class Qc Qq Ar string .
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.It Ic device-name Qq string ;
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This is shorthand for
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.Dq Ic match Qo Li device-name Qc Qq Ar string .
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This matches a device named
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.Ar string ,
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which is allowed to be a regular expression or a variable previously created
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containing a regular expression.
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The
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.Dq Li device-name
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variable
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is available for later use with the
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.Ic action
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statement.
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.It Ic match Qo Ar variable Qc Qq Ar value ;
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Matches the content of
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.Ar value
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against
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.Ar variable ;
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the content of
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.Ar value
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may be a regular expression.
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Not required during
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.Ic attach
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nor
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.Ic detach
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events since the
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.Ic device-name
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statement takes care of all device matching.
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For a partial list of variables, see below.
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.It Ic media-type Qq Ar string ;
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For network devices,
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.Ic media-type
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will match devices that have the given media type.
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Valid media types are:
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.Dq Li Ethernet ,
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.Dq Li Tokenring ,
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.Dq Li FDDI ,
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.Dq Li 802.11 ,
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and
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.Dq Li ATM .
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.It Ic subdevice Qq Ar string ;
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This is shorthand for
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.Dq Ic match Qo Li subdevice Qc Qq Ar string .
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.El
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.Pp
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The following sub-statements are supported within the
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.Ic nomatch
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statement.
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.Bl -tag -width ".Ic directory"
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.It Ic action Qq Ar command ;
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Same as above.
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.It Ic match Qo Ar variable Qc Qq Ar value ;
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Matches the content of
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.Ar value
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against
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.Ar variable ;
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the content of
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.Ar value
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may be a regular expression.
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For a partial list of variables, see below.
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.El
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.Pp
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The following sub-statements are supported within the
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.Ic notify
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statement.
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The
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.Dq Li notify
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variable is available inside this statement and contains, a value, depending
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on which system and subsystem that delivered the event.
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.Bl -tag -width ".Ic directory"
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.It Ic action Qq Ar command ;
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Command to execute upon a successful match.
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Example
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.Dq Li "/etc/rc.d/power_profile $notify" .
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.It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
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Any number of
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.Ic match
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statements can exist within a
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.Ic notify
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statement;
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.Ar value
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can be either a fixed string or a regular expression.
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Below is a list of available systems, subsystems, and types.
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.It Ic media-type Qq Ar string ;
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See above.
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.El
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.Ss Variables that can be used with the match statement
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A partial list of variables and their possible values that can be used together
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with the
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.Ic match
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statement.
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The variables are published by the bus based on characteristics of the device
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that generated the event (for device events).
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Variables for other classes of events are dependent on those events.
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.Pp
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.Bl -tag -width ".Li manufacturer" -compact
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.It Ic Variable
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.Ic Description
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.It Li *
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The entire message from the current event.
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.It Li _
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The entire message from the current event, after the initial type character.
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.It Li timestamp
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The time this event was processed, in seconds since 1970 dot fraction.
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.It Li bus
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Device name of parent bus.
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.It Li cdev
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Device node path if one is created by the
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.Xr devfs 5
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filesystem.
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.It Li cisproduct
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CIS-product.
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.It Li cisvendor
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CIS-vendor.
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.It Li class
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Device class.
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.It Li comm
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Executable name (kernel).
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.It Li core
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|
Path to core file (kernel).
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.It Li device
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Device ID.
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.It Li devclass
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Device Class (USB).
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.It Li devsubclass
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Device Sub-class (USB).
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.It Li device-name
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Name of attached/detached device.
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.It Li endpoints
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Endpoint count (USB).
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.It Li function
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Card functions.
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.It Li interface
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Interface ID (USB).
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.It Li intclass
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|
Interface Class (USB).
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.It Li intprotocol
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|
Interface Protocol (USB).
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.It Li intsubclass
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|
Interface Sub-class (USB).
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.It Li jail
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|
Jail name for the process triggering the rule (RCTL).
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.It Li manufacturer
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Manufacturer ID (pccard).
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.It Li mode
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|
Peripheral mode (USB).
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.It Li notify
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Match the value of the
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.Dq Li notify
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variable.
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.It Li parent
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Parent device.
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.It Li pid
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|
PID of the process triggering the rule (RCTL).
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.It Li port
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Hub port number (USB).
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.It Li product
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Product ID (pccard/USB).
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.It Li release
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Hardware revision (USB).
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.It Li ruid
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Real UID of the process triggering the rule (RCTL).
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.It Li rule
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Rule (RCTL).
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.It Li sernum
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Serial Number (USB).
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.It Li slot
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Card slot.
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.It Li subvendor
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Sub-vendor ID.
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.It Li subdevice
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Sub-device ID.
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.It Li subsystem
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Matches a subsystem of a system, see below.
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.It Li system
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Matches a system type, see below.
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.It Li type
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Type of notification, see below.
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.It Li vendor
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Vendor ID.
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.El
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.Ss Notify matching
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A partial list of systems, subsystems, and types used within the
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.Ic notify
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mechanism.
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.Pp
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.Bl -tag -width ".Li coretemp" -compact
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.It Sy System
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.It Li ACPI
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Events related to the ACPI subsystem.
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.Bl -tag -width ".Sy Subsystem" -compact
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.It Sy Subsystem
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.It Li ACAD
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|
AC line state ($notify=0x00 is offline, 0x01 is online).
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.It Li Button
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Button state ($notify=0x00 is power, 0x01 is sleep).
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.It Li CMBAT
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|
Battery events.
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.It Li Dock
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Dock state ($notify=0x00 is undocked, 0x01 is docked).
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.It Li Lid
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Lid state ($notify=0x00 is closed, 0x01 is open).
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.It Li PROCESSOR
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Processor state/configuration ($notify=0x81 is a change in available Cx states).
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.It Li Resume
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Resume notification.
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.It Li Suspend
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Suspend notification.
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.It Li Thermal
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Thermal zone events.
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.El
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.Pp
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.It Li CARP
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Events related to the
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.Xr carp 4
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protocol.
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.Bl -tag -width ".Sy Subsystem" -compact
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.It Sy Subsystem
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.It Ar vhid@interface
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The
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.Dq subsystem
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contains the actual CARP vhid and the name of the network interface
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on which the event took place.
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.Bl -tag -width ".Li MASTER" -compact
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.It Sy Type
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.It Li MASTER
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Node become the master for a virtual host.
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.It Li BACKUP
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Node become the backup for a virtual host.
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.El
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.El
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.Pp
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.It Li IFNET
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Events related to the network subsystem.
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.Bl -tag -width ".Sy Subsystem" -compact
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.It Sy Subsystem
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.It Ar interface
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The
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.Dq subsystem
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is the actual name of the network interface on which the event
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took place.
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.Bl -tag -width ".Li LINK_DOWN" -compact
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.It Sy Type
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.It Li LINK_UP
|
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Carrier status changed to UP.
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.It Li LINK_DOWN
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Carrier status changed to DOWN.
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.It Li ATTACH
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The network interface is attached to the system.
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.It Li DETACH
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The network interface is detached from the system.
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.El
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.El
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.Pp
|
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.It Li DEVFS
|
|
Events related to the
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.Xr devfs 5
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filesystem.
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.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
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.It Li CDEV
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.Bl -tag -width ".Li DESTROY" -compact
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.It Sy Type
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.It Li CREATE
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The
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.Xr devfs 5
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node is created.
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.It Li DESTROY
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The
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.Xr devfs 5
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node is destroyed.
|
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.El
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.El
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.Pp
|
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.It Li GEOM
|
|
Events related to the
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.Xr geom 4
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framework.
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The difference compared to
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.Li DEVFS
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is that
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.Li GEOM
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only includes disk-like devices.
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.Bl -tag -width ".Sy Subsystem" -compact
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.It Sy Subsystem
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.It Li DEV
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.Bl -tag -width ".Li MEDIACHANGE" -compact
|
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.It Sy Type
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.It Li CREATE
|
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A
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.Xr geom 4
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provider is created.
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.It Li DESTROY
|
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A
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.Xr geom 4
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provider is destroyed.
|
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.It Li GEOM::physpath
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The physical path of a device has changed.
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.It Li MEDIACHANGE
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Physical media has changed.
|
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.It Li SIZECHANGE
|
|
A
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.Xr geom 4
|
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provider size has changed.
|
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.El
|
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.El
|
|
.Pp
|
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.It Li RCTL
|
|
Events related to the
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.Xr rctl 8
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framework.
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|
.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
|
|
.It Li rule
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|
.Bl -tag -width ".Li matched" -compact
|
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.It Sy Type
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.It Li matched
|
|
A rule with action specified as "devctl" was triggered.
|
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.El
|
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.El
|
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.Pp
|
|
.It Li USB
|
|
Events related to the USB subsystem.
|
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.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
|
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.It Li DEVICE
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.Bl -tag -width ".Li DETACH" -compact
|
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.It Sy Type
|
|
.It Li ATTACH
|
|
USB device is attached to the system.
|
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.It Li DETACH
|
|
USB device is detached from the system.
|
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.El
|
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.It Li INTERFACE
|
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.Bl -tag -width ".Li DETACH" -compact
|
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.It Sy Type
|
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.It Li ATTACH
|
|
USB interface is attached to a device.
|
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.It Li DETACH
|
|
USB interface is detached from a device.
|
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.El
|
|
.El
|
|
.Pp
|
|
.It Li coretemp
|
|
Events related to the
|
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.Xr coretemp 4
|
|
device.
|
|
.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
|
|
.It Li Thermal
|
|
Notification that the CPU core has reached critical temperature.
|
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.Bl -tag -width ".Ar temperature" -compact
|
|
.It Sy Type
|
|
.It Ar temperature
|
|
String containing the temperature of the core that has become too hot.
|
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.El
|
|
.El
|
|
.Pp
|
|
.It Li kern
|
|
Events related to the kernel.
|
|
.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
|
|
.It Li power
|
|
.Bl -tag -width ".li resume" -compact
|
|
.It Sy Type
|
|
.It Li resume
|
|
Notification that the system has woken from the suspended state.
|
|
.El
|
|
.El
|
|
.Pp
|
|
.It Li kernel
|
|
More events related to the kernel.
|
|
.Bl -tag -width ".Sy Subsystem" -compact
|
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.It Sy Subsystem
|
|
.It Li signal
|
|
.Bl -tag -width ".li resume" -compact
|
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.It Sy Type
|
|
.It Li coredump
|
|
Notification that a process has crashed and dumped core.
|
|
.El
|
|
.El
|
|
.Pp
|
|
.It Li CAM
|
|
Events related to the
|
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.Xr cam 4
|
|
system.
|
|
.Bl -tag -width ".Sy Subsystem" -compact
|
|
.It Sy Subsystem
|
|
.It Li periph
|
|
Events related to peripheral devices.
|
|
.Bl -tag -width ".li timeout" -compact
|
|
.It Sy Type
|
|
.It Li error
|
|
Generic errors.
|
|
.It Li timeout
|
|
Command timeouts.
|
|
.El
|
|
.El
|
|
.El
|
|
.Pp
|
|
A link state change to UP on the interface
|
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.Dq Li fxp0
|
|
would result in the following notify event:
|
|
.Bd -literal -offset indent
|
|
system=IFNET, subsystem=fxp0, type=LINK_UP
|
|
.Ed
|
|
.Pp
|
|
An AC line state change to
|
|
.Dq offline
|
|
would result in the following event:
|
|
.Bd -literal -offset indent
|
|
system=ACPI, subsystem=ACAD, notify=0x00
|
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.Ed
|
|
.Ss Comments
|
|
Comments may appear anywhere that whitespace may appear in a
|
|
configuration file.
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To appeal to programmers of all kinds, they can
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be written in C, C++, or shell/Perl constructs.
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.Pp
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C-style comments start with the two characters
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.Ql /*
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(slash, star) and end with
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.Ql */
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(star, slash).
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Because they are completely delimited with these characters,
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they can be used to comment only a portion of a line or to span
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multiple lines.
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.Pp
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C-style comments cannot be nested.
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For example, the following is
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not valid because the entire comment ends with the first
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.Ql */ :
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.Bd -literal -offset indent
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/* This is the start of a comment.
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This is still part of the comment.
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/* This is an incorrect attempt at nesting a comment. */
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This is no longer in any comment. */
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.Ed
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.Pp
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C++-style comments start with the two characters
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.Ql //
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(slash, slash) and continue to the end of the physical line.
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They cannot be continued across multiple physical lines; to have
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one logical comment span multiple lines, each line must use the
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.Ql //
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pair.
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For example:
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.Bd -literal -offset indent
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// This is the start of a comment. The next line
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// is a new comment, even though it is logically
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// part of the previous comment.
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.Ed
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.Sh FILES
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.Bl -tag -width ".Pa /etc/devd.conf" -compact
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.It Pa /etc/devd.conf
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The
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.Xr devd 8
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configuration file.
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.El
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.Sh EXAMPLES
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.Bd -literal
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#
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# This will catch link down events on the interfaces fxp0 and ath0
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#
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notify 0 {
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match "system" "IFNET";
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match "subsystem" "(fxp0|ath0)";
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match "type" "LINK_DOWN";
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action "logger $subsystem is DOWN";
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};
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#
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# Match lid open/close events
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# These can be combined to a single event, by passing the
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# value of $notify to the external script.
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#
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notify 0 {
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match "system" "ACPI";
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match "subsystem" "Lid";
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match "notify" "0x00";
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action "logger Lid closed, we can sleep now!";
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};
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notify 0 {
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match "system" "ACPI";
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match "subsystem" "Lid";
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match "notify" "0x01";
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action "logger Lid opened, the sleeper must awaken!";
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};
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#
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# Match a USB device type
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#
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notify 0 {
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match "system" "USB";
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match "subsystem" "INTERFACE";
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match "type" "ATTACH";
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match "intclass" "0x0e";
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action "logger USB video device attached";
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};
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#
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# Try to configure ath and wi devices with pccard_ether
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# as they are attached.
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#
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attach 0 {
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device-name "(ath|wi)[0-9]+";
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action "/etc/pccard_ether $device-name start";
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};
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#
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# Stop ath and wi devices as they are detached from
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# the system.
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#
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detach 0 {
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device-name "(ath|wi)[0-9]+";
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action "/etc/pccard_ether $device-name stop";
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};
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.Ed
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.Pp
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The installed
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.Pa /etc/devd.conf
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has many additional examples.
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.Sh SEE ALSO
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.Xr cam 4 ,
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.Xr coretemp 4 ,
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.Xr devfs 5 ,
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.Xr re_format 7 ,
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.Xr devd 8
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