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49 .Nd configuration file for
55 configuration consists of two general features, statements
57 All statements end with a semicolon.
58 Many statements can contain substatements, which are also
59 terminated with a semicolon.
61 The following statements are supported:
62 .Bl -tag -width ".Ic options"
64 Specifies various matching criteria and actions to perform when
65 a newly attached device matches said criteria.
67 Specifies various matching criteria and actions to perform when
68 a newly detached device matches said criteria.
70 Specifies various matching criteria and actions to perform when
71 no device driver currently loaded in the kernel claims a (new)
74 Specifies various matching criteria and actions to perform when the kernel
75 sends an event notification to userland.
77 Specifies various options and parameters for the operation of
81 Statements may occur in any order in the configuration file, and may be
82 repeated as often as required.
83 Further details on the syntax and meaning of each statement and their
84 substatements are explained below.
86 Each statement, except
88 has a priority (an arbitrary number) associated with it, where
90 is defined as the lowest priority.
91 If two statements match the same event, only the action of the statement with
92 highest priority will be executed.
93 In this way generic statements can be overridden for devices or
94 notifications that require special attention.
96 The general syntax of a statement is:
97 .Bd -literal -offset indent
101 substatement "value";
105 The following sub-statements are supported within the
108 .Bl -tag -width ".Ic directory"
109 .It Ic directory Qq Ar /some/path ;
110 Adds the given directory to the list of directories from which
112 will read all files named "*.conf" as further
116 statements can be used.
117 .It Ic pid-file Qq Pa /var/run/devd.pid ;
119 .It Ic set Ar regexp-name Qq Ar (some|regexp) ;
120 Creates a regular expression and assigns it to the variable
122 The variable is available throughout the rest of
123 the configuration file.
124 If the string begins with
126 it matches if the regular expression formed by the rest of the string
128 All regular expressions have an implicit
133 The following sub-statements are supported within the
138 .Bl -tag -width ".Ic directory"
139 .It Ic action Qq Ar command ;
140 Command to execute upon a successful match.
142 .Dq Li "/etc/pccard_ether $device-name start" .
143 .It Ic class Qq Ar string ;
144 This is shorthand for
145 .Dq Ic match Qo Li class Qc Qq Ar string .
146 .It Ic device-name Qq string ;
147 This is shorthand for
148 .Dq Ic match Qo Li device-name Qc Qq Ar string .
149 This matches a device named
151 which is allowed to be a regular expression or a variable previously created
152 containing a regular expression.
156 is available for later use with the
159 .It Ic match Qo Ar variable Qc Qq Ar value ;
160 Matches the content of
166 may be a regular expression.
173 statement takes care of all device matching.
174 For a partial list of variables, see below.
175 .It Ic media-type Qq Ar string ;
178 will match devices that have the given media type.
179 Valid media types are:
186 .It Ic subdevice Qq Ar string ;
187 This is shorthand for
188 .Dq Ic match Qo Li subdevice Qc Qq Ar string .
191 The following sub-statements are supported within the
194 .Bl -tag -width ".Ic directory"
195 .It Ic action Qq Ar command ;
197 .It Ic match Qo Ar variable Qc Qq Ar value ;
198 Matches the content of
204 may be a regular expression.
205 For a partial list of variables, see below.
208 The following sub-statements are supported within the
213 variable is available inside this statement and contains, a value, depending
214 on which system and subsystem that delivered the event.
215 .Bl -tag -width ".Ic directory"
216 .It Ic action Qq Ar command ;
217 Command to execute upon a successful match.
219 .Dq Li "/etc/rc.d/power_profile $notify" .
220 .It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
223 statements can exist within a
227 can be either a fixed string or a regular expression.
228 Below is a list of available systems, subsystems, and types.
229 .It Ic media-type Qq Ar string ;
232 .Ss Variables that can be used with the match statement
233 A partial list of variables and their possible values that can be used together
237 The variables are published by the bus based on characteristics of the device
238 that generated the event (for device events).
239 Variables for other classes of events are dependent on those events.
241 .Bl -tag -width ".Li manufacturer" -compact
245 The entire message from the current event.
247 The entire message from the current event, after the initial type character.
249 The time this event was processed, in seconds since 1970 dot fraction.
251 Device name of parent bus.
253 Device node path if one is created by the
263 Executable name (kernel).
265 Path to core file (kernel).
271 Device Sub-class (USB).
273 Name of attached/detached device.
275 Endpoint count (USB).
281 Interface Class (USB).
283 Interface Protocol (USB).
285 Interface Sub-class (USB).
287 Jail name for the process triggering the rule (RCTL).
289 Manufacturer ID (pccard).
291 Peripheral mode (USB).
293 Match the value of the
299 PID of the process triggering the rule (RCTL).
301 Hub port number (USB).
303 Product ID (pccard/USB).
305 Hardware revision (USB).
307 Real UID of the process triggering the rule (RCTL).
319 Matches a subsystem of a system, see below.
321 Matches a system type, see below.
323 Type of notification, see below.
328 A partial list of systems, subsystems, and types used within the
332 .Bl -tag -width ".Li coretemp" -compact
335 Events related to the ACPI subsystem.
336 .Bl -tag -width ".Sy Subsystem" -compact
339 AC line state ($notify=0x00 is offline, 0x01 is online).
341 Button state ($notify=0x00 is power, 0x01 is sleep).
345 Lid state ($notify=0x00 is closed, 0x01 is open).
347 Processor state/configuration ($notify=0x81 is a change in available Cx states).
351 Suspend notification.
357 Events related to the
360 .Bl -tag -width ".Sy Subsystem" -compact
362 .It Ar vhid@interface
365 contains the actual CARP vhid and the name of the network interface
366 on which the event took place.
367 .Bl -tag -width ".Li MASTER" -compact
370 Node become the master for a virtual host.
372 Node become the backup for a virtual host.
377 Events related to the network subsystem.
378 .Bl -tag -width ".Sy Subsystem" -compact
383 is the actual name of the network interface on which the event
385 .Bl -tag -width ".Li LINK_DOWN" -compact
388 Carrier status changed to UP.
390 Carrier status changed to DOWN.
392 The network interface is attached to the system.
394 The network interface is detached from the system.
399 Events related to the
402 .Bl -tag -width ".Sy Subsystem" -compact
405 .Bl -tag -width ".Li DESTROY" -compact
419 Events related to the
422 The difference compared to
426 only includes disk-like devices.
427 .Bl -tag -width ".Sy Subsystem" -compact
430 .Bl -tag -width ".Li MEDIACHANGE" -compact
439 provider is destroyed.
440 .It Li GEOM::physpath
441 The physical path of a device has changed.
443 Physical media has changed.
447 provider size has changed.
452 Events related to the
455 .Bl -tag -width ".Sy Subsystem" -compact
458 .Bl -tag -width ".Li matched" -compact
461 A rule with action specified as "devctl" was triggered.
466 Events related to the USB subsystem.
467 .Bl -tag -width ".Sy Subsystem" -compact
470 .Bl -tag -width ".Li DETACH" -compact
473 USB device is attached to the system.
475 USB device is detached from the system.
478 .Bl -tag -width ".Li DETACH" -compact
481 USB interface is attached to a device.
483 USB interface is detached from a device.
488 Events related to the
491 .Bl -tag -width ".Sy Subsystem" -compact
494 Notification that the CPU core has reached critical temperature.
495 .Bl -tag -width ".Ar temperature" -compact
498 String containing the temperature of the core that has become too hot.
503 Events related to the kernel.
504 .Bl -tag -width ".Sy Subsystem" -compact
507 .Bl -tag -width ".li resume" -compact
510 Notification that the system has woken from the suspended state.
515 More events related to the kernel.
516 .Bl -tag -width ".Sy Subsystem" -compact
519 .Bl -tag -width ".li resume" -compact
522 Notification that a process has crashed and dumped core.
527 Events related to the
530 .Bl -tag -width ".Sy Subsystem" -compact
533 Events related to peripheral devices.
534 .Bl -tag -width ".li timeout" -compact
544 A link state change to UP on the interface
546 would result in the following notify event:
547 .Bd -literal -offset indent
548 system=IFNET, subsystem=fxp0, type=LINK_UP
551 An AC line state change to
553 would result in the following event:
554 .Bd -literal -offset indent
555 system=ACPI, subsystem=ACAD, notify=0x00
558 Comments may appear anywhere that whitespace may appear in a
560 To appeal to programmers of all kinds, they can
561 be written in C, C++, or shell/Perl constructs.
563 C-style comments start with the two characters
565 (slash, star) and end with
568 Because they are completely delimited with these characters,
569 they can be used to comment only a portion of a line or to span
572 C-style comments cannot be nested.
573 For example, the following is
574 not valid because the entire comment ends with the first
576 .Bd -literal -offset indent
577 /* This is the start of a comment.
578 This is still part of the comment.
579 /* This is an incorrect attempt at nesting a comment. */
580 This is no longer in any comment. */
583 C++-style comments start with the two characters
585 (slash, slash) and continue to the end of the physical line.
586 They cannot be continued across multiple physical lines; to have
587 one logical comment span multiple lines, each line must use the
591 .Bd -literal -offset indent
592 // This is the start of a comment. The next line
593 // is a new comment, even though it is logically
594 // part of the previous comment.
597 .Bl -tag -width ".Pa /etc/devd.conf" -compact
598 .It Pa /etc/devd.conf
606 # This will catch link down events on the interfaces fxp0 and ath0
609 match "system" "IFNET";
610 match "subsystem" "(fxp0|ath0)";
611 match "type" "LINK_DOWN";
612 action "logger $subsystem is DOWN";
616 # Match lid open/close events
617 # These can be combined to a single event, by passing the
618 # value of $notify to the external script.
621 match "system" "ACPI";
622 match "subsystem" "Lid";
623 match "notify" "0x00";
624 action "logger Lid closed, we can sleep now!";
628 match "system" "ACPI";
629 match "subsystem" "Lid";
630 match "notify" "0x01";
631 action "logger Lid opened, the sleeper must awaken!";
635 # Match a USB device type
638 match "system" "USB";
639 match "subsystem" "INTERFACE";
640 match "type" "ATTACH";
641 match "intclass" "0x0e";
642 action "logger USB video device attached";
646 # Try to configure ath and wi devices with pccard_ether
647 # as they are attached.
650 device-name "(ath|wi)[0-9]+";
651 action "/etc/pccard_ether $device-name start";
655 # Stop ath and wi devices as they are detached from
659 device-name "(ath|wi)[0-9]+";
660 action "/etc/pccard_ether $device-name stop";
666 has many additional examples.