Index: head/sbin/devd/devd.conf.5
===================================================================
--- head/sbin/devd/devd.conf.5	(revision 364402)
+++ head/sbin/devd/devd.conf.5	(revision 364403)
@@ -1,716 +1,730 @@
 .\"
 .\" Copyright (c) 2002 M. Warner Losh <imp@FreeBSD.org>
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. The name of the author may not be used to endorse or promote products
 .\"    derived from this software without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\" $FreeBSD$
 .\"
 .\" The section on comments was taken from named.conf.5, which has the
 .\" following copyright:
 .\" Copyright (c) 1999-2000 by Internet Software Consortium
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 .\" ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 .\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 .\" CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 .\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 .\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 .\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 .\" SOFTWARE.
 .\"
 .Dd August 18, 2020
 .Dt DEVD.CONF 5
 .Os
 .Sh NAME
 .Nm devd.conf
 .Nd configuration file for
 .Xr devd 8
 .Sh DESCRIPTION
 .Ss General Syntax
 A
 .Xr devd 8
 configuration consists of two general features, statements
 and comments.
 All statements end with a semicolon.
 Many statements can contain substatements, which are also
 terminated with a semicolon.
 .Pp
 The following statements are supported:
 .Bl -tag -width ".Ic options"
 .It Ic attach
 Specifies various matching criteria and actions to perform when
 a newly attached device matches said criteria.
 .It Ic detach
 Specifies various matching criteria and actions to perform when
 a newly detached device matches said criteria.
 .It Ic nomatch
 Specifies various matching criteria and actions to perform when
 no device driver currently loaded in the kernel claims a (new)
 device.
 .It Ic notify
 Specifies various matching criteria and actions to perform when the kernel
 sends an event notification to userland.
 .It Ic options
 Specifies various options and parameters for the operation of
 .Xr devd 8 .
 .El
 .Pp
 Statements may occur in any order in the configuration file, and may be
 repeated as often as required.
 Further details on the syntax and meaning of each statement and their
 substatements are explained below.
 .Pp
 Each statement, except
 .Ic options
 has a priority (an arbitrary number) associated with it, where
 .Ql 0
 is defined as the lowest priority.
 If two statements match the same event, only the action of the statement with
 highest priority will be executed.
 In this way generic statements can be overridden for devices or
 notifications that require special attention.
 .Pp
 The general syntax of a statement is:
 .Bd -literal -offset indent
 statement priority {
 	substatement "value";
 	...
 	substatement "value";
 };
 .Ed
 .Ss Sub-statements
 The following sub-statements are supported within the
 .Ic options
 statement.
 .Bl -tag -width ".Ic directory"
 .It Ic directory Qq Ar /some/path ;
 Adds the given directory to the list of directories from which
 .Xr devd 8
 will read all files named "*.conf" as further
 configuration files.
 Any number of
 .Ic directory
 statements can be used.
 .It Ic pid-file Qq Pa /var/run/devd.pid ;
 Specifies PID file.
 .It Ic set Ar regexp-name Qq Ar (some|regexp) ;
 Creates a regular expression and assigns it to the variable
 .Ar regexp-name .
 The variable is available throughout the rest of
 the configuration file.
 If the string begins with
 .Ql \&! ,
 it matches if the regular expression formed by the rest of the string
 does not match.
 All regular expressions have an implicit
 .Ql ^$
 around them.
 .El
 .Pp
 The following sub-statements are supported within the
 .Ic attach
 and
 .Ic detach
 statements.
 .Bl -tag -width ".Ic directory"
 .It Ic action Qq Ar command ;
 Command to execute upon a successful match.
 Example
 .Dq Li "/etc/pccard_ether $device-name start" .
 .It Ic class Qq Ar string ;
 This is shorthand for
 .Dq Ic match Qo Li class Qc Qq Ar string .
 .It Ic device-name Qq string ;
 This is shorthand for
 .Dq Ic match Qo Li device-name Qc Qq Ar string .
 This matches a device named
 .Ar string ,
 which is allowed to be a regular expression or a variable previously created
 containing a regular expression.
 The
 .Dq Li device-name
 variable
 is available for later use with the
 .Ic action
 statement.
 .It Ic match Qo Ar variable Qc Qq Ar value ;
 Matches the content of
 .Ar value
 against
 .Ar variable ;
 the content of
 .Ar value
 may be a regular expression.
 Not required during
 .Ic attach
 nor
 .Ic detach
 events since the
 .Ic device-name
 statement takes care of all device matching.
 For a partial list of variables, see below.
 .It Ic media-type Qq Ar string ;
 For network devices,
 .Ic media-type
 will match devices that have the given media type.
 Valid media types are:
 .Dq Li Ethernet ,
 .Dq Li Tokenring ,
 .Dq Li FDDI ,
 .Dq Li 802.11 ,
 and
 .Dq Li ATM .
 .It Ic subdevice Qq Ar string ;
 This is shorthand for
 .Dq Ic match Qo Li subdevice Qc Qq Ar string .
 .El
 .Pp
 The following sub-statements are supported within the
 .Ic nomatch
 statement.
 .Bl -tag -width ".Ic directory"
 .It Ic action Qq Ar command ;
 Same as above.
 .It Ic match Qo Ar variable Qc Qq Ar value ;
 Matches the content of
 .Ar value
 against
 .Ar variable ;
 the content of
 .Ar value
 may be a regular expression.
 For a partial list of variables, see below.
 .El
 .Pp
 The following sub-statements are supported within the
 .Ic notify
 statement.
 The
 .Dq Li notify
 variable is available inside this statement and contains, a value, depending
 on which system and subsystem that delivered the event.
 .Bl -tag -width ".Ic directory"
 .It Ic action Qq Ar command ;
 Command to execute upon a successful match.
 Example
 .Dq Li "/etc/rc.d/power_profile $notify" .
 .It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
 Any number of
 .Ic match
 statements can exist within a
 .Ic notify
 statement;
 .Ar value
 can be either a fixed string or a regular expression.
 Below is a list of available systems, subsystems, and types.
 .It Ic media-type Qq Ar string ;
 See above.
 .El
 .Ss Variables that can be used with the match statement
 A partial list of variables and their possible values that can be used together
 with the
 .Ic match
 statement.
 The variables are published by the bus based on characteristics of the device
 that generated the event (for device events).
 Variables for other classes of events are dependent on those events.
 .Pp
 .Bl -tag -width ".Li manufacturer" -compact
 .It Ic Variable
 .Ic Description
 .It Li *
 The entire message from the current event.
 .It Li _
 The entire message from the current event, after the initial type character.
 .It Li timestamp
 The time this event was processed, in seconds since 1970 dot fraction.
 .It Li bus
 Device name of parent bus.
 .It Li cdev
 Device node path if one is created by the
 .Xr devfs 5
 filesystem.
 .It Li class
 Device class.
 .It Li comm
 Executable name (kernel).
 .It Li core
 Path to core file (kernel).
 .It Li device
 Device ID.
 .It Li devclass
 Device Class (USB).
 .It Li devsubclass
 Device Sub-class (USB).
 .It Li device-name
 Name of attached/detached device.
 .It Li endpoints
 Endpoint count (USB).
 .It Li function
 Card functions.
 .It Li interface
 Interface ID (USB).
 .It Li intclass
 Interface Class (USB).
 .It Li intprotocol
 Interface Protocol (USB).
 .It Li intsubclass
 Interface Sub-class (USB).
 .It Li jail
 Jail name for the process triggering the rule (RCTL).
 .It Li mode
 Peripheral mode (USB).
 .It Li notify
 Match the value of the
 .Dq Li notify
 variable.
 .It Li parent
 Parent device.
 .It Li pid
 PID of the process triggering the rule (RCTL).
 .It Li port
 Hub port number (USB).
 .It Li product
 Product ID (USB).
 .It Li release
 Hardware revision (USB).
 .It Li ruid
 Real UID of the process triggering the rule (RCTL).
 .It Li rule
 Rule (RCTL).
 .It Li sernum
 Serial Number (USB).
 .It Li slot
 Card slot.
 .It Li subvendor
 Sub-vendor ID (PCI).
 .It Li subdevice
 Sub-device ID (PCI).
 .It Li subsystem
 Matches a subsystem of a system, see below.
 .It Li system
 Matches a system type, see below.
 .It Li type
 Type of notification, see below.
 .It Li vendor
 Vendor ID.
 .El
 .Ss Notify matching
 A partial list of systems, subsystems, and types used within the
 .Ic notify
 mechanism.
 .\"
 .\" Please keep these tables sorted. Also, please use the same parameters
 .\" for each of the tables so that things line up in columns nicely.
 .\" Please do not omit the type column for notifiers that omit it.
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li ACPI Ta Ta Ta
 Events related to the ACPI Subsystem.
 .It Li ACPI Ta Li ACAD Ta Ta
 AC line state ($notify=0x00 is offline, 0x01 is online).
 .It Li ACPI Ta Li Button Ta Ta
 Button state ($notify=0x00 is power, 0x01 is sleep).
 .It Li ACPI Ta Li CMBAT Ta Ta
 Battery events.
 .It Li ACPI Ta Li Dock Ta Ta
 Dock state ($notify=0x00 is undocked, 0x01 is docked).
 .It Li ACPI Ta Li Lid Ta Ta
 Lid state ($notify=0x00 is closed, 0x01 is open).
 .It Li ACPI Ta Li PROCESSOR Ta Ta
 Processor state/configuration ($notify=0x81 is a change in available Cx states).
 .It Li ACPI Ta Li Resume Ta Ta
 Resume notification.
 .It Li ACPI Ta Li Suspend Ta Ta
 Suspend notification.
 .It Li ACPI Ta Li Thermal Ta Ta
 Thermal zone events.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li AEON Ta Li power Ta Li press Ta
 The power button on an Amiga has been pressed.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li CAM Ta Ta Ta
 Events related to the
 .Xr cam 4
 system.
 .It Li CAM Ta Li periph Ta Ta
 Events related to peripheral devices.
 .It Li CAM Ta Li periph Ta Li error Ta
 Generic errors.
 .It Li CAM Ta Li periph Ta Li timeout Ta
 Command timeouts.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li CARP Ta Ta Ta
 Events related to the
 .Xr carp 4
 protocol.
 .It CARP Ta Ar vhid@inet Ta Ta
 The
 .Dq subsystem
 contains the actual CARP vhid and the name of the network interface
 on which the event took place.
 .It CARP Ta Ar vhid@inet Ta MASTER Ta
 Node become the master for a virtual host.
 .It CARP Ta Ar vhid@inet Ta BACKUP Ta
 Node become the backup for a virtual host.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li coretemp Ta Ta Ta
 Events related to the
 .Xr coretemp 4
 device.
 .It Li coretemp Ta Li Thermal Ta Ta
 Notification that the CPU core has reached critical temperature.
 .It Li coretemp Ta Li Thermal Ta Li temperature Ta
 String containing the temperature of the core that has become too hot.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li IFNET
 .It Li IFNET Ta Ar inet Ta Ta
 The
 .Dq subsystem
 is the actual name of the network interface on which the event
 took place.
 .It Li IFNET Ta Ar inet Ta Li LINK_UP Ta
 Carrier status changed to UP.
 .It Li IFNET Ta Ar inet Ta Li LINK_DOWN Ta
 Carrier status changed to DOWN.
 .It Li IFNET Ta Ar inet Ta Li ATTACH Ta
 The network interface is attached to the system.
 .It Li IFNET Ta Ar inet Ta Li DETACH Ta
 The network interface is detached from the system.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li DEVFS
 .It Li DEVFS Ta Li CDEV Ta Li CREATE Ta
 The
 .Xr devfs 5
 node is created.
 .It Li DEVFS Ta Li CDEV Ta Li DESTROY Ta
 The
 .Xr devfs 5
 node is destroyed.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li GEOM Ta Ta Ta
 Events related to the
 .Xr geom 4
 framework.
 The difference compared to
 .Li DEVFS
 is that
 .Li GEOM
 only includes disk-like devices.
 .It Li GEOM Ta Li DEV Ta Li CREATE Ta
 A
 .Xr geom 4
 provider is created.
 .It Li GEOM Ta Li DEV Ta Li DESTROY Ta
 A
 .Xr geom 4
 provider is destroyed.
 .It Li GEOM Ta Li DEV Ta Li GEOM::physpath Ta
 The physical path of a device has changed.
 .It Li GEOM Ta Li DEV Ta Li GEOM::rotation_rate Ta
 The rotation rate of the disk has changed.
 .It Li GEOM Ta Li DEV Ta Li MEDIACHANGE Ta
 Physical media has changed.
 .It Li GEOM Ta Li DEV Ta Li SIZECHANGE Ta
 A
 .Xr geom 4
 provider size has changed.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li kern Ta Li power Ta Li resume Ta
 Notification that the system has woken from the suspended state.
 .El
 .Pp
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li kernel Ta Li signal Ta Li coredump Ta
 Notification that a process has crashed and dumped core.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li PMU Ta Ta Ta
 Notification of events from various types of Power Management Units.
 .It Li PMU Ta Li "AC" Ta Ta
 Notifications of AC power related events.
 .It Li PMU Ta Li "AC" Ta Li overvoltage Ta
 An over-voltage condition was detected on the AC power line.
 .It Li PMU Ta Li "AC" Ta Li plugged Ta
 Power has been applied to the AC power line.
 .It Li PMU Ta Li "AC" Ta Li unplugged Ta
 Power has been removed from the AC power line.
 .It Li PMU Ta Li Battery Ta Ta
 .It Li PMU Ta Li Battery Ta absent Ta
 Battery is no longer absent.
 .It Li PMU Ta Li Battery Ta charged Ta
 The battery has become charged.
 .It Li PMU Ta Li Battery Ta charging Ta
 The battery has started charging.
 .It Li PMU Ta Li Battery Ta disconnected Ta
 The battery has been disconnected.
 .It Li PMU Ta Li Battery Ta high-temp Ta
 The battery reported a temperature over the limit.
 .It Li PMU Ta Li Battery Ta low-temp Ta
 The battery reported a temperature under the limit.
 .It Li PMU Ta Li Battery Ta plugged Ta
 The battery has become plugged (eg connected).
 .It Li PMU Ta Li Battery Ta shutdown-threshold Ta
 The power in the battery has fallen below the shutdown threshold.
 .It Li PMU Ta Li Battery Ta warning-threshold Ta
 The power in the battery has fallen below the warn the user threshold.
 .It Li PMU Ta Li Button Ta pressed Ta
 A button on a
 .Xr adb 4
 or
 .Xr pmu 4
 has been pressed.
 .It Li PMU Ta Li keys Ta Ta
 One of the keys on the
 .Xr adb 4
 keyboard has been pressed.
 .It Li PMU Ta Li keys Ta brightness Ta
 A brightness level change has been requested.
 Direction is in the $notify variable.
 .It Li PMU Ta Li keys Ta mute Ta
 The mute key 
 .It Li PMU Ta Li keys Ta volume Ta
 A volume level change has been requested.
 Direction is in the $notify variable.
 .It Li PMU Ta Li keys Ta eject Ta
 An ejection has been requested.
 .It Li PMU Ta Li lid Ta close Ta
 The
 .Xr pmc 4
 device has detected the lid closing.
 .It Li PMU Ta Li lid Ta open Ta
 The
 .Xr pmc 4
 device has detected the lid openinging.
 .It Li PMU Ta Li POWER Ta ACLINE Ta
 The
 .Xr pmc 4
 device has deteted an AC line state ($notify=0x00 is offline, 0x01 is online).
 .It Li PMU Ta Li USB Ta overvoltage Ta
 An over-voltage condition on the power lines for the USB power pins.
 .It Li PMU Ta Li USB Ta plugged Ta
 A device has been plugged into a USB device.
 .It Li PMU Ta Li USB Ta undervoltage Ta
 An under-voltage condition on the power lines for the USB power pins.
 .It Li PMU Ta Li USB Ta unplugged Ta
 A device has been unplugged into a USB device.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li RCTL Ta Ta Ta
 Events related to the
 .Xr rctl 8
 framework.
 .It Li RCTL Ta Li rule Ta Li matched Ta
 A rule with action specified as "devctl" was triggered.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li USB Ta Ta Ta
 Events related to the USB subsystem.
 .It Li USB Ta Li DEVICE Ta Li ATTACH Ta
 USB device is attached to the system.
 .It Li USB Ta Li DEVICE Ta Li DETACH Ta
 USB device is detached to the system.
 .It Li USB Ta Li INTERFACE Ta Li ATTACH Ta
 USB interface is attached to a device.
 .It Li USB Ta Li INTERFACE Ta Li DETACH Ta
 USB interface is detached from a device.
 .El
 .Pp
 .Bl -column "System" "Subsystem" "1234567" -compact
 .Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
+.It Li VFS Ta Ta Ta
+Events from the vfs system.
+.It Li VFS Ta Li FS Ta Ta
+Events that change what is mounted to the system.
+.It Li VFS Ta Li FS Ta Li MOUNT Ta
+Notification of a filesystem is mounted for the first time.
+.It Li VFS Ta Li FS Ta Li REMOUNT Ta
+Notification of a filesystem is remounted (whether or not the options actually change).
+.It Li VFS Ta Li FS Ta Li UNMOUNT Ta
+Notification of a filesystem being unmounted.
+.El
+.Pp
+.Bl -column "System" "Subsystem" "1234567" -compact
+.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
 .It Li ZFS Ta ZFS Ta Ta
 Events about the ZFS subsystem.
 See
 .Xr zfsd 8
 and
 .Pa /etc/devd/zfs.conf
 for details.
 .El
 .Pp
 .\"
 .\" End of tables
 .\"
 A link state change to UP on the interface
 .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
 .Ed
 .Ss Comments
 Comments may appear anywhere that whitespace may appear in a
 configuration file.
 To appeal to programmers of all kinds, they can
 be written in C, C++, or shell/Perl constructs.
 .Pp
 C-style comments start with the two characters
 .Ql /*
 (slash, star) and end with
 .Ql */
 (star, slash).
 Because they are completely delimited with these characters,
 they can be used to comment only a portion of a line or to span
 multiple lines.
 .Pp
 C-style comments cannot be nested.
 For example, the following is
 not valid because the entire comment ends with the first
 .Ql */ :
 .Bd -literal -offset indent
 /* This is the start of a comment.
    This is still part of the comment.
 /* This is an incorrect attempt at nesting a comment. */
    This is no longer in any comment. */
 .Ed
 .Pp
 C++-style comments start with the two characters
 .Ql //
 (slash, slash) and continue to the end of the physical line.
 They cannot be continued across multiple physical lines; to have
 one logical comment span multiple lines, each line must use the
 .Ql //
 pair.
 For example:
 .Bd -literal -offset indent
 // This is the start of a comment.  The next line
 // is a new comment, even though it is logically
 // part of the previous comment.
 .Ed
 .Sh FILES
 .Bl -tag -width ".Pa /etc/devd.conf" -compact
 .It Pa /etc/devd.conf
 The
 .Xr devd 8
 configuration file.
 .El
 .Sh EXAMPLES
 .Bd -literal
 #
 # This will catch link down events on the interfaces fxp0 and ath0
 #
 notify 0 {
 	match "system"			"IFNET";
 	match "subsystem"		"(fxp0|ath0)";
 	match "type"			"LINK_DOWN";
 	action "logger $subsystem is DOWN";
 };
 
 #
 # Match lid open/close events
 # These can be combined to a single event, by passing the
 # value of $notify to the external script.
 #
 notify 0 {
 	match "system"			"ACPI";
 	match "subsystem"		"Lid";
 	match "notify"			"0x00";
 	action "logger Lid closed, we can sleep now!";
 };
 
 notify 0 {
 	match "system"			"ACPI";
 	match "subsystem"		"Lid";
 	match "notify"			"0x01";
 	action "logger Lid opened, the sleeper must awaken!";
 };
 
 #
 # Match a USB device type
 #
 notify 0 {
 	match "system"			"USB";
 	match "subsystem"		"INTERFACE";
 	match "type"			"ATTACH";
 	match "intclass"		"0x0e";
 	action "logger USB video device attached";
 };
 
 #
 # Try to configure ath and iwn devices with pccard_ether
 # as they are attached.
 #
 attach 0 {
         device-name "(ath|iwn)[0-9]+";
         action "/etc/pccard_ether $device-name start";
 };
 
 #
 # Stop ath and iwn devices as they are detached from
 # the system.
 #
 detach 0 {
         device-name "(ath|iwn)[0-9]+";
         action "/etc/pccard_ether $device-name stop";
 };
 .Ed
 .Pp
 The installed
 .Pa /etc/devd.conf
 has many additional examples.
 .Sh SEE ALSO
 .Xr cam 4 ,
 .Xr coretemp 4 ,
 .Xr devfs 5 ,
 .Xr re_format 7 ,
 .Xr devd 8