xref: /freebsd/sbin/devd/devd.conf.5 (revision d5e3895ea4fe4ef9db8823774e07b4368180a23e)
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2.\" Copyright (c) 2002 M. Warner Losh <imp@FreeBSD.org>
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43.Dd August 18, 2020
44.Dt DEVD.CONF 5
45.Os
46.Sh NAME
47.Nm devd.conf
48.Nd configuration file for
49.Xr devd 8
50.Sh DESCRIPTION
51.Ss General Syntax
52A
53.Xr devd 8
54configuration consists of two general features, statements
55and comments.
56All statements end with a semicolon.
57Many statements can contain substatements, which are also
58terminated with a semicolon.
59.Pp
60The following statements are supported:
61.Bl -tag -width ".Ic options"
62.It Ic attach
63Specifies various matching criteria and actions to perform when
64a newly attached device matches said criteria.
65.It Ic detach
66Specifies various matching criteria and actions to perform when
67a newly detached device matches said criteria.
68.It Ic nomatch
69Specifies various matching criteria and actions to perform when
70no device driver currently loaded in the kernel claims a (new)
71device.
72.It Ic notify
73Specifies various matching criteria and actions to perform when the kernel
74sends an event notification to userland.
75.It Ic options
76Specifies various options and parameters for the operation of
77.Xr devd 8 .
78.El
79.Pp
80Statements may occur in any order in the configuration file, and may be
81repeated as often as required.
82Further details on the syntax and meaning of each statement and their
83substatements are explained below.
84.Pp
85Each statement, except
86.Ic options
87has a priority (an arbitrary number) associated with it, where
88.Ql 0
89is defined as the lowest priority.
90If two statements match the same event, only the action of the statement with
91highest priority will be executed.
92In this way generic statements can be overridden for devices or
93notifications that require special attention.
94.Pp
95The general syntax of a statement is:
96.Bd -literal -offset indent
97statement priority {
98	substatement "value";
99	...
100	substatement "value";
101};
102.Ed
103.Ss Sub-statements
104The following sub-statements are supported within the
105.Ic options
106statement.
107.Bl -tag -width ".Ic directory"
108.It Ic directory Qq Ar /some/path ;
109Adds the given directory to the list of directories from which
110.Xr devd 8
111will read all files named "*.conf" as further
112configuration files.
113Any number of
114.Ic directory
115statements can be used.
116.It Ic pid-file Qq Pa /var/run/devd.pid ;
117Specifies PID file.
118.It Ic set Ar regexp-name Qq Ar (some|regexp) ;
119Creates a regular expression and assigns it to the variable
120.Ar regexp-name .
121The variable is available throughout the rest of
122the configuration file.
123If the string begins with
124.Ql \&! ,
125it matches if the regular expression formed by the rest of the string
126does not match.
127All regular expressions have an implicit
128.Ql ^$
129around them.
130.El
131.Pp
132The following sub-statements are supported within the
133.Ic attach
134and
135.Ic detach
136statements.
137.Bl -tag -width ".Ic directory"
138.It Ic action Qq Ar command ;
139Command to execute upon a successful match.
140Example
141.Dq Li "/etc/pccard_ether $device-name start" .
142.It Ic class Qq Ar string ;
143This is shorthand for
144.Dq Ic match Qo Li class Qc Qq Ar string .
145.It Ic device-name Qq string ;
146This is shorthand for
147.Dq Ic match Qo Li device-name Qc Qq Ar string .
148This matches a device named
149.Ar string ,
150which is allowed to be a regular expression or a variable previously created
151containing a regular expression.
152The
153.Dq Li device-name
154variable
155is available for later use with the
156.Ic action
157statement.
158.It Ic match Qo Ar variable Qc Qq Ar value ;
159Matches the content of
160.Ar value
161against
162.Ar variable ;
163the content of
164.Ar value
165may be a regular expression.
166Not required during
167.Ic attach
168nor
169.Ic detach
170events since the
171.Ic device-name
172statement takes care of all device matching.
173For a partial list of variables, see below.
174.It Ic media-type Qq Ar string ;
175For network devices,
176.Ic media-type
177will match devices that have the given media type.
178Valid media types are:
179.Dq Li Ethernet ,
180.Dq Li Tokenring ,
181.Dq Li FDDI ,
182.Dq Li 802.11 ,
183and
184.Dq Li ATM .
185.It Ic subdevice Qq Ar string ;
186This is shorthand for
187.Dq Ic match Qo Li subdevice Qc Qq Ar string .
188.El
189.Pp
190The following sub-statements are supported within the
191.Ic nomatch
192statement.
193.Bl -tag -width ".Ic directory"
194.It Ic action Qq Ar command ;
195Same as above.
196.It Ic match Qo Ar variable Qc Qq Ar value ;
197Matches the content of
198.Ar value
199against
200.Ar variable ;
201the content of
202.Ar value
203may be a regular expression.
204For a partial list of variables, see below.
205.El
206.Pp
207The following sub-statements are supported within the
208.Ic notify
209statement.
210The
211.Dq Li notify
212variable is available inside this statement and contains, a value, depending
213on which system and subsystem that delivered the event.
214.Bl -tag -width ".Ic directory"
215.It Ic action Qq Ar command ;
216Command to execute upon a successful match.
217Example
218.Dq Li "/etc/rc.d/power_profile $notify" .
219.It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ;
220Any number of
221.Ic match
222statements can exist within a
223.Ic notify
224statement;
225.Ar value
226can be either a fixed string or a regular expression.
227Below is a list of available systems, subsystems, and types.
228.It Ic media-type Qq Ar string ;
229See above.
230.El
231.Ss Variables that can be used with the match statement
232A partial list of variables and their possible values that can be used together
233with the
234.Ic match
235statement.
236The variables are published by the bus based on characteristics of the device
237that generated the event (for device events).
238Variables for other classes of events are dependent on those events.
239.Pp
240.Bl -tag -width ".Li manufacturer" -compact
241.It Ic Variable
242.Ic Description
243.It Li *
244The entire message from the current event.
245.It Li _
246The entire message from the current event, after the initial type character.
247.It Li timestamp
248The time this event was processed, in seconds since 1970 dot fraction.
249.It Li bus
250Device name of parent bus.
251.It Li cdev
252Device node path if one is created by the
253.Xr devfs 5
254filesystem.
255.It Li class
256Device class.
257.It Li comm
258Executable name (kernel).
259.It Li core
260Path to core file (kernel).
261.It Li device
262Device ID.
263.It Li devclass
264Device Class (USB).
265.It Li devsubclass
266Device Sub-class (USB).
267.It Li device-name
268Name of attached/detached device.
269.It Li endpoints
270Endpoint count (USB).
271.It Li function
272Card functions.
273.It Li interface
274Interface ID (USB).
275.It Li intclass
276Interface Class (USB).
277.It Li intprotocol
278Interface Protocol (USB).
279.It Li intsubclass
280Interface Sub-class (USB).
281.It Li jail
282Jail name for the process triggering the rule (RCTL).
283.It Li mode
284Peripheral mode (USB).
285.It Li notify
286Match the value of the
287.Dq Li notify
288variable.
289.It Li parent
290Parent device.
291.It Li pid
292PID of the process triggering the rule (RCTL).
293.It Li port
294Hub port number (USB).
295.It Li product
296Product ID (USB).
297.It Li release
298Hardware revision (USB).
299.It Li ruid
300Real UID of the process triggering the rule (RCTL).
301.It Li rule
302Rule (RCTL).
303.It Li sernum
304Serial Number (USB).
305.It Li slot
306Card slot.
307.It Li subvendor
308Sub-vendor ID (PCI).
309.It Li subdevice
310Sub-device ID (PCI).
311.It Li subsystem
312Matches a subsystem of a system, see below.
313.It Li system
314Matches a system type, see below.
315.It Li type
316Type of notification, see below.
317.It Li vendor
318Vendor ID.
319.El
320.Ss Notify matching
321A partial list of systems, subsystems, and types used within the
322.Ic notify
323mechanism.
324.\"
325.\" Please keep these tables sorted. Also, please use the same parameters
326.\" for each of the tables so that things line up in columns nicely.
327.\" Please do not omit the type column for notifiers that omit it.
328.Pp
329.Bl -column "System" "Subsystem" "1234567" -compact
330.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
331.It Li ACPI Ta Ta Ta
332Events related to the ACPI Subsystem.
333.It Li ACPI Ta Li ACAD Ta Ta
334AC line state ($notify=0x00 is offline, 0x01 is online).
335.It Li ACPI Ta Li Button Ta Ta
336Button state ($notify=0x00 is power, 0x01 is sleep).
337.It Li ACPI Ta Li CMBAT Ta Ta
338Battery events.
339.It Li ACPI Ta Li Dock Ta Ta
340Dock state ($notify=0x00 is undocked, 0x01 is docked).
341.It Li ACPI Ta Li Lid Ta Ta
342Lid state ($notify=0x00 is closed, 0x01 is open).
343.It Li ACPI Ta Li PROCESSOR Ta Ta
344Processor state/configuration ($notify=0x81 is a change in available Cx states).
345.It Li ACPI Ta Li Resume Ta Ta
346Resume notification.
347.It Li ACPI Ta Li Suspend Ta Ta
348Suspend notification.
349.It Li ACPI Ta Li Thermal Ta Ta
350Thermal zone events.
351.El
352.Pp
353.Bl -column "System" "Subsystem" "1234567" -compact
354.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
355.It Li AEON Ta Li power Ta Li press Ta
356The power button on an amiga has been pressed.
357.El
358.Pp
359.Bl -column "System" "Subsystem" "1234567" -compact
360.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
361.It Li CAM Ta Ta Ta
362Events related to the
363.Xr cam 4
364system.
365.It Li CAM Ta Li periph Ta Ta
366Events related to peripheral devices.
367.It Li CAM Ta Li periph Ta Li error Ta
368Generic errors.
369.It Li CAM Ta Li periph Ta Li timeout Ta
370Command timeouts.
371.El
372.Pp
373.Bl -column "System" "Subsystem" "1234567" -compact
374.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
375.It Li CARP Ta Ta Ta
376Events related to the
377.Xr carp 4
378protocol.
379.It CARP Ta Ar vhid@inet Ta Ta
380The
381.Dq subsystem
382contains the actual CARP vhid and the name of the network interface
383on which the event took place.
384.It CARP Ta Ar vhid@inet Ta MASTER Ta
385Node become the master for a virtual host.
386.It CARP Ta Ar vhid@inet Ta BACKUP Ta
387Node become the backup for a virtual host.
388.El
389.Pp
390.Bl -column "System" "Subsystem" "1234567" -compact
391.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
392.It Li coretemp Ta Ta Ta
393Events related to the
394.Xr coretemp 4
395device.
396.It Li coretemp Ta Li Thermal Ta Ta
397Notification that the CPU core has reached critical temperature.
398.It Li coretemp Ta Li Thermal Ta Li temperature Ta
399String containing the temperature of the core that has become too hot.
400.El
401.Pp
402.Bl -column "System" "Subsystem" "1234567" -compact
403.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
404.It Li IFNET
405.It Li IFNET Ta Ar inet Ta Ta
406The
407.Dq subsystem
408is the actual name of the network interface on which the event
409took place.
410.It Li IFNET Ta Ar inet Ta Li LINK_UP Ta
411Carrier status changed to UP.
412.It Li IFNET Ta Ar inet Ta Li LINK_DOWN Ta
413Carrier status changed to DOWN.
414.It Li IFNET Ta Ar inet Ta Li ATTACH Ta
415The network interface is attached to the system.
416.It Li IFNET Ta Ar inet Ta Li DETACH Ta
417The network interface is detached from the system.
418.El
419.Pp
420.Bl -column "System" "Subsystem" "1234567" -compact
421.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
422.It Li DEVFS
423.It Li DEVFS Ta Li CDEV Ta Li CREATE Ta
424The
425.Xr devfs 5
426node is created.
427.It Li DEVFS Ta Li CDEV Ta Li DESTROY Ta
428The
429.Xr devfs 5
430node is destroyed.
431.El
432.Pp
433.Bl -column "System" "Subsystem" "1234567" -compact
434.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
435.It Li GEOM Ta Ta Ta
436Events related to the
437.Xr geom 4
438framework.
439The difference compared to
440.Li DEVFS
441is that
442.Li GEOM
443only includes disk-like devices.
444.It Li GEOM Ta Li DEV Ta Li CREATE Ta
445A
446.Xr geom 4
447provider is created.
448.It Li GEOM Ta Li DEV Ta Li DESTROY Ta
449A
450.Xr geom 4
451provider is destroyed.
452.It Li GEOM Ta Li DEV Ta Li GEOM::physpath Ta
453The physical path of a device has changed.
454.It Li GEOM Ta Li DEV Ta Li GEOM::rotation_rate Ta
455The rotation rate of the disk has changed.
456.It Li GEOM Ta Li DEV Ta Li MEDIACHANGE Ta
457Physical media has changed.
458.It Li GEOM Ta Li DEV Ta Li SIZECHANGE Ta
459A
460.Xr geom 4
461provider size has changed.
462.El
463.Pp
464.Bl -column "System" "Subsystem" "1234567" -compact
465.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
466.It Li kern Ta Li power Ta Li resume Ta
467Notification that the system has woken from the suspended state.
468.El
469.Pp
470.Pp
471.Bl -column "System" "Subsystem" "1234567" -compact
472.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
473.It Li kernel Ta Li signal Ta Li coredump Ta
474Notification that a process has crashed and dumped core.
475.El
476.Pp
477.Bl -column "System" "Subsystem" "1234567" -compact
478.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
479.It Li PMU Ta Ta Ta
480Notification of events from various types of Power Management Units.
481.It Li PMU Ta Li "AC" Ta Ta
482Notifications of AC power related events.
483.It Li PMU Ta Li "AC" Ta Li overvoltage Ta
484An over voltage ondition was detected on the AC power line.
485.It Li PMU Ta Li "AC" Ta Li plugged Ta
486Power has been applied to the AC power line.
487.It Li PMU Ta Li "AC" Ta Li unplugged Ta
488Power has been removed from the AC power line.
489.It Li PMU Ta Li Battery Ta Ta
490.It Li PMU Ta Li Battery Ta absent Ta
491Battery is no longer absent.
492.It Li PMU Ta Li Battery Ta charged Ta
493The battery has become charged.
494.It Li PMU Ta Li Battery Ta charging Ta
495The battery has started charging.
496.It Li PMU Ta Li Battery Ta disconnected Ta
497The battery has been disconnected.
498.It Li PMU Ta Li Battery Ta high-temp Ta
499The battery reported a temperature over the limit.
500.It Li PMU Ta Li Battery Ta low-temp Ta
501The battery reported a temperature under the limit.
502.It Li PMU Ta Li Battery Ta plugged Ta
503The battery has become plugged (eg connected).
504.It Li PMU Ta Li Battery Ta shutdown-threshold Ta
505The power in the battery has fallen below the shutdown threshold.
506.It Li PMU Ta Li Battery Ta warning-threshold Ta
507The power in the battery has fallen below the warn the user threshold.
508.It Li PMU Ta Li Button Ta pressed Ta
509A button on a
510.Xr adb 4
511or
512.Xr pmu 4
513has been pressed.
514.It Li PMU Ta Li keys Ta Ta
515One of the keys on the
516.Xr adb 4
517keyboard has been pressed.
518.It Li PMU Ta Li keys Ta brightness Ta
519A brightness level change has been requested.
520Direction is in the $notify variable.
521.It Li PMU Ta Li keys Ta mute Ta
522The mute key
523.It Li PMU Ta Li keys Ta volume Ta
524A volume level change has been requested.
525Direction is in the $notify variable.
526.It Li PMU Ta Li keys Ta eject Ta
527An ejection has been requested.
528.It Li PMU Ta Li lid Ta close Ta
529The
530.Xr pmc 4
531device has detected the lid closing.
532.It Li PMU Ta Li lid Ta open Ta
533The
534.Xr pmc 4
535device has detected the lid openinging.
536.It Li PMU Ta Li POWER Ta ACLINE Ta
537The
538.Xr pmc 4
539device has deteted an AC line state ($notify=0x00 is offline, 0x01 is online).
540.It Li PMU Ta Li USB Ta overvoltage Ta
541An over-voltage condition on the power lines for the USB power pins.
542.It Li PMU Ta Li USB Ta plugged Ta
543A device has been plugged into a USB device.
544.It Li PMU Ta Li USB Ta undervoltage Ta
545An under-voltage condition on the power lines for the USB power pins.
546.It Li PMU Ta Li USB Ta unplugged Ta
547A device has been unplugged into a USB device.
548.El
549.Pp
550.Bl -column "System" "Subsystem" "1234567" -compact
551.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
552.It Li RCTL Ta Ta Ta
553Events related to the
554.Xr rctl 8
555framework.
556.It Li RCTL Ta Li rule Ta Li matched Ta
557A rule with action specified as "devctl" was triggered.
558.El
559.Pp
560.Bl -column "System" "Subsystem" "1234567" -compact
561.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
562.It Li USB Ta Ta Ta
563Events related to the USB subsystem.
564.It Li USB Ta Li DEVICE Ta Li ATTACH Ta
565USB device is attached to the system.
566.It Li USB Ta Li DEVICE Ta Li DETACH Ta
567USB device is detached to the system.
568.It Li USB Ta Li INTERFACE Ta Li ATTACH Ta
569USB interface is attached to a device.
570.It Li USB Ta Li INTERFACE Ta Li DETACH Ta
571USB interface is detached from a device.
572.El
573.Pp
574.Bl -column "System" "Subsystem" "1234567" -compact
575.Sy "System" Ta Sy "Subsystem" Ta Sy "Type" Ta Sy "Description"
576.It Li ZFS Ta ZFS Ta Ta
577Events about the ZFS subsystem.
578See
579.Xr zfsd 8
580and
581.Pa /etc/devd/zfs.conf
582for details.
583.El
584.Pp
585.\"
586.\" End of tables
587.\"
588A link state change to UP on the interface
589.Dq Li fxp0
590would result in the following notify event:
591.Bd -literal -offset indent
592system=IFNET subsystem=fxp0 type=LINK_UP
593.Ed
594.Pp
595An AC line state change to
596.Dq offline
597would result in the following event:
598.Bd -literal -offset indent
599system=ACPI subsystem=ACAD notify=0x00
600.Ed
601.Ss Comments
602Comments may appear anywhere that whitespace may appear in a
603configuration file.
604To appeal to programmers of all kinds, they can
605be written in C, C++, or shell/Perl constructs.
606.Pp
607C-style comments start with the two characters
608.Ql /*
609(slash, star) and end with
610.Ql */
611(star, slash).
612Because they are completely delimited with these characters,
613they can be used to comment only a portion of a line or to span
614multiple lines.
615.Pp
616C-style comments cannot be nested.
617For example, the following is
618not valid because the entire comment ends with the first
619.Ql */ :
620.Bd -literal -offset indent
621/* This is the start of a comment.
622   This is still part of the comment.
623/* This is an incorrect attempt at nesting a comment. */
624   This is no longer in any comment. */
625.Ed
626.Pp
627C++-style comments start with the two characters
628.Ql //
629(slash, slash) and continue to the end of the physical line.
630They cannot be continued across multiple physical lines; to have
631one logical comment span multiple lines, each line must use the
632.Ql //
633pair.
634For example:
635.Bd -literal -offset indent
636// This is the start of a comment.  The next line
637// is a new comment, even though it is logically
638// part of the previous comment.
639.Ed
640.Sh FILES
641.Bl -tag -width ".Pa /etc/devd.conf" -compact
642.It Pa /etc/devd.conf
643The
644.Xr devd 8
645configuration file.
646.El
647.Sh EXAMPLES
648.Bd -literal
649#
650# This will catch link down events on the interfaces fxp0 and ath0
651#
652notify 0 {
653	match "system"			"IFNET";
654	match "subsystem"		"(fxp0|ath0)";
655	match "type"			"LINK_DOWN";
656	action "logger $subsystem is DOWN";
657};
658
659#
660# Match lid open/close events
661# These can be combined to a single event, by passing the
662# value of $notify to the external script.
663#
664notify 0 {
665	match "system"			"ACPI";
666	match "subsystem"		"Lid";
667	match "notify"			"0x00";
668	action "logger Lid closed, we can sleep now!";
669};
670
671notify 0 {
672	match "system"			"ACPI";
673	match "subsystem"		"Lid";
674	match "notify"			"0x01";
675	action "logger Lid opened, the sleeper must awaken!";
676};
677
678#
679# Match a USB device type
680#
681notify 0 {
682	match "system"			"USB";
683	match "subsystem"		"INTERFACE";
684	match "type"			"ATTACH";
685	match "intclass"		"0x0e";
686	action "logger USB video device attached";
687};
688
689#
690# Try to configure ath and iwn devices with pccard_ether
691# as they are attached.
692#
693attach 0 {
694        device-name "(ath|iwn)[0-9]+";
695        action "/etc/pccard_ether $device-name start";
696};
697
698#
699# Stop ath and iwn devices as they are detached from
700# the system.
701#
702detach 0 {
703        device-name "(ath|iwn)[0-9]+";
704        action "/etc/pccard_ether $device-name stop";
705};
706.Ed
707.Pp
708The installed
709.Pa /etc/devd.conf
710has many additional examples.
711.Sh SEE ALSO
712.Xr cam 4 ,
713.Xr coretemp 4 ,
714.Xr devfs 5 ,
715.Xr re_format 7 ,
716.Xr devd 8
717