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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 $notify" .
220 .It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
223 statements can exist within a
227 can be either a fixed string or a regular expression.
228 Below is a list of available systems, subsystems, and types.
229 .It Ic media-type Qq Ar string ;
232 .Ss Variables that can be used with the match statement
233 A partial list of variables and their possible values that can be used together
238 .Bl -tag -width ".Li manufacturer" -compact
242 Device name of parent bus.
244 Device node path if one is created by the
258 Device Sub-class (USB)
260 Name of attached/detached device.
268 Interface Class (USB)
270 Interface Protocol (USB)
272 Interface Sub-class (USB)
274 Jail name for the process triggering the rule (RCTL)
276 Manufacturer ID (pccard).
278 Peripheral mode (USB)
280 Match the value of the
286 PID of the process triggering the rule (RCTL)
288 Hub port number (USB)
290 Product ID (pccard/USB).
292 Hardware revision (USB)
294 Real UID of the process triggering the rule (RCTL)
306 Matches a subsystem of a system, see below.
308 Matches a system type, see below.
310 Type of notification, see below.
315 A partial list of systems, subsystems, and types used within the
319 .Bl -tag -width ".Li coretemp" -compact
322 Events related to the ACPI subsystem.
323 .Bl -tag -width ".Sy Subsystem" -compact
326 AC line state ($notify=0x00 is offline, 0x01 is online).
328 Button state ($notify=0x00 is power, 0x01 is sleep).
332 Lid state ($notify=0x00 is closed, 0x01 is open).
334 Processor state/configuration ($notify=0x81 is a change in available Cx states).
338 Suspend notification.
344 Events related to the
347 .Bl -tag -width ".Sy Subsystem" -compact
349 .It Ar vhid@interface
352 contains the actual CARP vhid and the name of the network interface
353 on which the event took place.
354 .Bl -tag -width ".Li MASTER" -compact
357 Node become the master for a virtual host.
359 Node become the backup for a virtual host.
364 Events related to the network subsystem.
365 .Bl -tag -width ".Sy Subsystem" -compact
370 is the actual name of the network interface on which the event
372 .Bl -tag -width ".Li LINK_DOWN" -compact
375 Carrier status changed to UP.
377 Carrier status changed to DOWN.
379 The network interface is attached to the system.
381 The network interface is detached from the system.
386 Events related to the
389 .Bl -tag -width ".Sy Subsystem" -compact
392 .Bl -tag -width ".Li DESTROY" -compact
406 Events related to the
409 The difference compared to
413 only includes disk-like devices.
414 .Bl -tag -width ".Sy Subsystem" -compact
417 .Bl -tag -width ".Li MEDIACHANGE" -compact
422 device node is created.
426 device node is destroyed.
427 .It Li GEOM::physpath
428 The physical path of a device has changed.
430 Physical media has changed.
435 Events related to the
438 .Bl -tag -width ".Sy Subsystem" -compact
441 .Bl -tag -width ".Li matched" -compact
444 A rule with action specified as "devctl" was triggered.
449 Events related to the USB subsystem.
450 .Bl -tag -width ".Sy Subsystem" -compact
453 .Bl -tag -width ".Li DETACH" -compact
456 USB device is attached to the system.
458 USB device is detached from the system.
461 .Bl -tag -width ".Li DETACH" -compact
464 USB interface is attached to a device.
466 USB interface is detached from a device.
471 Events related to the
474 .Bl -tag -width ".Sy Subsystem" -compact
477 Notification that the CPU core has reached critical temperature.
478 .Bl -tag -width ".Ar temperature" -compact
481 String containing the temperature of the core that has become too hot.
486 Events related to the kernel.
487 .Bl -tag -width ".Sy Subsystem" -compact
490 Information about the state of the system.
491 .Bl -tag -width ".li resume" -compact
494 Notification that the system has woken from the suspended state.
499 Events related to the
502 .Bl -tag -width ".Sy Subsystem" -compact
505 Events related to peripheral devices.
506 .Bl -tag -width ".li timeout" -compact
516 A link state change to UP on the interface
518 would result in the following notify event:
519 .Bd -literal -offset indent
520 system=IFNET, subsystem=fxp0, type=LINK_UP
523 An AC line state change to
525 would result in the following event:
526 .Bd -literal -offset indent
527 system=ACPI, subsystem=ACAD, notify=0x00
530 Comments may appear anywhere that whitespace may appear in a
532 To appeal to programmers of all kinds, they can
533 be written in C, C++, or shell/Perl constructs.
535 C-style comments start with the two characters
537 (slash, star) and end with
540 Because they are completely delimited with these characters,
541 they can be used to comment only a portion of a line or to span
544 C-style comments cannot be nested.
545 For example, the following is
546 not valid because the entire comment ends with the first
548 .Bd -literal -offset indent
549 /* This is the start of a comment.
550 This is still part of the comment.
551 /* This is an incorrect attempt at nesting a comment. */
552 This is no longer in any comment. */
555 C++-style comments start with the two characters
557 (slash, slash) and continue to the end of the physical line.
558 They cannot be continued across multiple physical lines; to have
559 one logical comment span multiple lines, each line must use the
563 .Bd -literal -offset indent
564 // This is the start of a comment. The next line
565 // is a new comment, even though it is logically
566 // part of the previous comment.
569 .Bl -tag -width ".Pa /etc/devd.conf" -compact
570 .It Pa /etc/devd.conf
578 # This will catch link down events on the interfaces fxp0 and ath0
581 match "system" "IFNET";
582 match "subsystem" "(fxp0|ath0)";
583 match "type" "LINK_DOWN";
584 action "logger $subsystem is DOWN";
588 # Match lid open/close events
589 # These can be combined to a single event, by passing the
590 # value of $notify to the external script.
593 match "system" "ACPI";
594 match "subsystem" "Lid";
595 match "notify" "0x00";
596 action "logger Lid closed, we can sleep now!";
600 match "system" "ACPI";
601 match "subsystem" "Lid";
602 match "notify" "0x01";
603 action "logger Lid opened, the sleeper must awaken!";
607 # Match a USB device type
610 match "system" "USB";
611 match "subsystem" "INTERFACE";
612 match "type" "ATTACH";
613 match "intclass" "0x0e";
614 action "logger USB video device attached";
618 # Try to configure ath and wi devices with pccard_ether
619 # as they are attached.
622 device-name "(ath|wi)[0-9]+";
623 action "/etc/pccard_ether $device-name start";
627 # Stop ath and wi devices as they are detached from
631 device-name "(ath|wi)[0-9]+";
632 action "/etc/pccard_ether $device-name stop";
638 has many additional examples.