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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 $notify" .
220 .It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
223 statements can exist within a
227 can be either a fixed string or a regular expression.
228 Below is a list of available systems, subsystems, and types.
229 .It Ic media-type Qq Ar string ;
232 .Ss Variables that can be used with the match statement
233 A partial list of variables and their possible values that can be used together
237 The variables are published by the bus based on characteristics of the device
238 that generated the event (for device events).
239 Variables for other classes of events are dependent on those events.
241 .Bl -tag -width ".Li manufacturer" -compact
245 The entire message from the current event.
247 The entire message from the current event, after the initial type character.
249 The time this event was processed, in seconds since 1970 dot fraction.
251 Device name of parent bus.
253 Device node path if one is created by the
259 Executable name (kernel).
261 Path to core file (kernel).
267 Device Sub-class (USB).
269 Name of attached/detached device.
271 Endpoint count (USB).
277 Interface Class (USB).
279 Interface Protocol (USB).
281 Interface Sub-class (USB).
283 Jail name for the process triggering the rule (RCTL).
285 Peripheral mode (USB).
287 Match the value of the
293 PID of the process triggering the rule (RCTL).
295 Hub port number (USB).
299 Hardware revision (USB).
301 Real UID of the process triggering the rule (RCTL).
313 Matches a subsystem of a system, see below.
315 Matches a system type, see below.
317 Type of notification, see below.
322 A partial list of systems, subsystems, and types used within the
326 .Bl -tag -width ".Li coretemp" -compact
329 Events related to the ACPI subsystem.
330 .Bl -tag -width ".Sy Subsystem" -compact
333 AC line state ($notify=0x00 is offline, 0x01 is online).
335 Button state ($notify=0x00 is power, 0x01 is sleep).
339 Dock state ($notify=0x00 is undocked, 0x01 is docked).
341 Lid state ($notify=0x00 is closed, 0x01 is open).
343 Processor state/configuration ($notify=0x81 is a change in available Cx states).
347 Suspend notification.
353 Events related to the
356 .Bl -tag -width ".Sy Subsystem" -compact
358 .It Ar vhid@interface
361 contains the actual CARP vhid and the name of the network interface
362 on which the event took place.
363 .Bl -tag -width ".Li MASTER" -compact
366 Node become the master for a virtual host.
368 Node become the backup for a virtual host.
373 Events related to the network subsystem.
374 .Bl -tag -width ".Sy Subsystem" -compact
379 is the actual name of the network interface on which the event
381 .Bl -tag -width ".Li LINK_DOWN" -compact
384 Carrier status changed to UP.
386 Carrier status changed to DOWN.
388 The network interface is attached to the system.
390 The network interface is detached from the system.
395 Events related to the
398 .Bl -tag -width ".Sy Subsystem" -compact
401 .Bl -tag -width ".Li DESTROY" -compact
415 Events related to the
418 The difference compared to
422 only includes disk-like devices.
423 .Bl -tag -width ".Sy Subsystem" -compact
426 .Bl -tag -width ".Li MEDIACHANGE" -compact
431 device node is created.
435 device node is destroyed.
436 .It Li GEOM::physpath
437 The physical path of a device has changed.
439 Physical media has changed.
444 Events related to the
447 .Bl -tag -width ".Sy Subsystem" -compact
450 .Bl -tag -width ".Li matched" -compact
453 A rule with action specified as "devctl" was triggered.
458 Events related to the USB subsystem.
459 .Bl -tag -width ".Sy Subsystem" -compact
462 .Bl -tag -width ".Li DETACH" -compact
465 USB device is attached to the system.
467 USB device is detached from the system.
470 .Bl -tag -width ".Li DETACH" -compact
473 USB interface is attached to a device.
475 USB interface is detached from a device.
480 Events related to the
483 .Bl -tag -width ".Sy Subsystem" -compact
486 Notification that the CPU core has reached critical temperature.
487 .Bl -tag -width ".Ar temperature" -compact
490 String containing the temperature of the core that has become too hot.
495 Events related to the kernel.
496 .Bl -tag -width ".Sy Subsystem" -compact
499 .Bl -tag -width ".li resume" -compact
502 Notification that the system has woken from the suspended state.
507 More events related to the kernel.
508 .Bl -tag -width ".Sy Subsystem" -compact
511 .Bl -tag -width ".li resume" -compact
514 Notification that a process has crashed and dumped core.
519 Events related to the
522 .Bl -tag -width ".Sy Subsystem" -compact
525 Events related to peripheral devices.
526 .Bl -tag -width ".li timeout" -compact
536 A link state change to UP on the interface
538 would result in the following notify event:
539 .Bd -literal -offset indent
540 system=IFNET, subsystem=fxp0, type=LINK_UP
543 An AC line state change to
545 would result in the following event:
546 .Bd -literal -offset indent
547 system=ACPI, subsystem=ACAD, notify=0x00
550 Comments may appear anywhere that whitespace may appear in a
552 To appeal to programmers of all kinds, they can
553 be written in C, C++, or shell/Perl constructs.
555 C-style comments start with the two characters
557 (slash, star) and end with
560 Because they are completely delimited with these characters,
561 they can be used to comment only a portion of a line or to span
564 C-style comments cannot be nested.
565 For example, the following is
566 not valid because the entire comment ends with the first
568 .Bd -literal -offset indent
569 /* This is the start of a comment.
570 This is still part of the comment.
571 /* This is an incorrect attempt at nesting a comment. */
572 This is no longer in any comment. */
575 C++-style comments start with the two characters
577 (slash, slash) and continue to the end of the physical line.
578 They cannot be continued across multiple physical lines; to have
579 one logical comment span multiple lines, each line must use the
583 .Bd -literal -offset indent
584 // This is the start of a comment. The next line
585 // is a new comment, even though it is logically
586 // part of the previous comment.
589 .Bl -tag -width ".Pa /etc/devd.conf" -compact
590 .It Pa /etc/devd.conf
598 # This will catch link down events on the interfaces fxp0 and ath0
601 match "system" "IFNET";
602 match "subsystem" "(fxp0|ath0)";
603 match "type" "LINK_DOWN";
604 action "logger $subsystem is DOWN";
608 # Match lid open/close events
609 # These can be combined to a single event, by passing the
610 # value of $notify to the external script.
613 match "system" "ACPI";
614 match "subsystem" "Lid";
615 match "notify" "0x00";
616 action "logger Lid closed, we can sleep now!";
620 match "system" "ACPI";
621 match "subsystem" "Lid";
622 match "notify" "0x01";
623 action "logger Lid opened, the sleeper must awaken!";
627 # Match a USB device type
630 match "system" "USB";
631 match "subsystem" "INTERFACE";
632 match "type" "ATTACH";
633 match "intclass" "0x0e";
634 action "logger USB video device attached";
638 # Try to configure ath and iwn devices with pccard_ether
639 # as they are attached.
642 device-name "(ath|iwn)[0-9]+";
643 action "/etc/pccard_ether $device-name start";
647 # Stop ath and iwn devices as they are detached from
651 device-name "(ath|iwn)[0-9]+";
652 action "/etc/pccard_ether $device-name stop";
658 has many additional examples.