842ab62b05
This change implements a notification (via devctl) to userland when the kernel produces coredumps after a process has crashed. devd can then run a specific command to produce a human readable crash report. The command is most usually a helper that runs gdb/lldb commands on the file/coredump pair. It's possible to use this functionality for implementing automatic generation of crash reports. devd(8) will be notified of the full path of the binary that crashed and the full path of the coredump file.
341 lines
9.8 KiB
Plaintext
341 lines
9.8 KiB
Plaintext
# $FreeBSD$
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#
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# Refer to devd.conf(5) and devd(8) man pages for the details on how to
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# run and configure devd.
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#
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# NB: All regular expressions have an implicit ^$ around them.
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# NB: device-name is shorthand for 'match device-name'
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options {
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# Each "directory" directive adds a directory to the list of
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# directories that we scan for files. Files are loaded in the order
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# that they are returned from readdir(3). The rule-sets are combined
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# to create a DFA that's used to match events to actions.
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directory "/etc/devd";
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directory "/usr/local/etc/devd";
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pid-file "/var/run/devd.pid";
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# Setup some shorthand for regex that we use later in the file.
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#XXX Yes, these are gross -- imp
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set scsi-controller-regex
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"(aac|adv|adw|aha|ahb|ahc|ahd|aic|amd|amr|asr|bt|ciss|ct|dpt|\
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esp|ida|iir|ips|isp|mlx|mly|mpt|ncr|ncv|nsp|stg|sym|trm|wds)\
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[0-9]+";
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};
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# Note that the attach/detach with the highest value wins, so that one can
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# override these general rules.
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#
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# Configure the interface on attach. Due to a historical accident, this
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# script is called pccard_ether.
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#
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# NB: DETACH events are ignored; the kernel should handle all cleanup
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# (routes, arp cache). Beware of races against immediate create
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# of a device with the same name; e.g.
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# ifconfig bridge0 destroy; ifconfig bridge0 create
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#
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notify 0 {
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match "system" "IFNET";
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match "subsystem" "!usbus[0-9]+";
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match "type" "ATTACH";
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action "/etc/pccard_ether $subsystem start";
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};
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#
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# Try to start dhclient on Ethernet-like interfaces when the link comes
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# up. Only devices that are configured to support DHCP will actually
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# run it. No link down rule exists because dhclient automatically exits
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# when the link goes down.
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#
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notify 0 {
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match "system" "IFNET";
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match "type" "LINK_UP";
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media-type "ethernet";
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action "/etc/rc.d/dhclient quietstart $subsystem";
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};
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#
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# Like Ethernet devices, but separate because
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# they have a different media type. We may want
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# to exploit this later.
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#
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detach 0 {
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media-type "802.11";
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action "/etc/pccard_ether $device-name stop";
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};
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attach 0 {
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media-type "802.11";
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action "/etc/pccard_ether $device-name start";
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};
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notify 0 {
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match "system" "IFNET";
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match "type" "LINK_UP";
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media-type "802.11";
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action "/etc/rc.d/dhclient quietstart $subsystem";
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};
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# An entry like this might be in a different file, but is included here
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# as an example of how to override things. Normally 'ed50' would match
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# the above attach/detach stuff, but the value of 100 makes it
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# hard wired to 1.2.3.4.
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attach 100 {
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device-name "ed50";
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action "ifconfig $device-name inet 1.2.3.4 netmask 0xffff0000";
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};
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detach 100 {
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device-name "ed50";
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};
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# When a USB Bluetooth dongle appears, activate it
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attach 100 {
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device-name "ubt[0-9]+";
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action "/etc/rc.d/bluetooth quietstart $device-name";
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};
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detach 100 {
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device-name "ubt[0-9]+";
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action "/etc/rc.d/bluetooth quietstop $device-name";
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};
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# Firmware downloader for Atheros AR3011 based USB Bluetooth devices
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#attach 100 {
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# match "vendor" "0x0cf3";
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# match "product" "0x3000";
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# action "sleep 2 && /usr/sbin/ath3kfw -d $device-name -f /usr/local/etc/ath3k-1.fw";
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#};
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# When a USB keyboard arrives, attach it as the console keyboard.
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attach 100 {
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device-name "ukbd0";
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action "/etc/rc.d/syscons setkeyboard /dev/ukbd0";
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};
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detach 100 {
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device-name "ukbd0";
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action "/etc/rc.d/syscons setkeyboard /dev/kbd0";
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};
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notify 100 {
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match "system" "DEVFS";
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match "subsystem" "CDEV";
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match "type" "CREATE";
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match "cdev" "atp[0-9]+";
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action "/etc/rc.d/moused quietstart $cdev";
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};
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notify 100 {
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match "system" "DEVFS";
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match "subsystem" "CDEV";
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match "type" "CREATE";
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match "cdev" "ums[0-9]+";
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action "/etc/rc.d/moused quietstart $cdev";
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};
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notify 100 {
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match "system" "DEVFS";
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match "subsystem" "CDEV";
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match "type" "CREATE";
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match "cdev" "wsp[0-9]+";
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action "/etc/rc.d/moused quietstart $cdev";
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};
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notify 100 {
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match "system" "DEVFS";
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match "subsystem" "CDEV";
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match "type" "DESTROY";
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match "cdev" "ums[0-9]+";
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action "/etc/rc.d/moused stop $cdev";
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};
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# Firmware download into the ActiveWire board. After the firmware download is
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# done, the device detaches and reappears as something new and shiny
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# automatically.
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attach 100 {
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match "vendor" "0x0854";
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match "product" "0x0100";
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match "release" "0x0000";
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action "/usr/local/bin/ezdownload -f /usr/local/share/usb/firmware/0854.0100.0_01.hex $device-name";
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};
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# Firmware download for Entrega Serial DB25 adapter.
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attach 100 {
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match "vendor" "0x1645";
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match "product" "0x8001";
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match "release" "0x0101";
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action "if ! kldstat -n usio > /dev/null 2>&1 ; then kldload usio; fi; /usr/sbin/ezdownload -v -f /usr/share/usb/firmware/1645.8001.0101 /dev/$device-name";
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};
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# This entry starts the ColdSync tool in daemon mode. Make sure you have an up
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# to date /usr/local/etc/palms. We override the 'listen' settings for port and
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# type in /usr/local/etc/coldsync.conf.
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notify 100 {
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match "system" "USB";
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match "subsystem" "DEVICE";
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match "type" "ATTACH";
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match "vendor" "0x082d";
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match "product" "0x0100";
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match "release" "0x0100";
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action "/usr/local/bin/coldsync -md -p /dev/$cdev -t usb";
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};
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#
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# Rescan SCSI device-names on attach, but not detach. However, it is
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# disabled by default due to reports of problems.
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#
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attach 0 {
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device-name "$scsi-controller-regex";
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// action "camcontrol rescan all";
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};
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# Don't even try to second guess what to do about drivers that don't
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# match here. Instead, pass it off to syslog. Commented out for the
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# moment, as the pnpinfo variable isn't set in devd yet. Individual
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# variables within the bus supplied pnpinfo are set.
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nomatch 0 {
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# action "logger Unknown device: $pnpinfo $location $bus";
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};
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# Various logging of unknown devices.
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nomatch 10 {
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match "bus" "uhub[0-9]+";
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action "logger Unknown USB device: vendor $vendor product $product \
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bus $bus";
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};
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# Some PC-CARDs don't offer numerical manufacturer/product IDs, just
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# show the CIS info there.
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nomatch 20 {
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match "bus" "pccard[0-9]+";
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match "manufacturer" "0xffffffff";
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match "product" "0xffffffff";
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action "logger Unknown PCCARD device: CISproduct $cisproduct \
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CIS-vendor $cisvendor bus $bus";
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};
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nomatch 10 {
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match "bus" "pccard[0-9]+";
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action "logger Unknown PCCARD device: manufacturer $manufacturer \
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product $product CISproduct $cisproduct CIS-vendor \
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$cisvendor bus $bus";
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};
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nomatch 10 {
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match "bus" "cardbus[0-9]+";
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action "logger Unknown Cardbus device: device $device class $class \
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vendor $vendor bus $bus";
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};
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# Switch power profiles when the AC line state changes.
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notify 10 {
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match "system" "ACPI";
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match "subsystem" "ACAD";
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action "/etc/rc.d/power_profile $notify";
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};
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# Notify all users before beginning emergency shutdown when we get
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# a _CRT or _HOT thermal event and we're going to power down the system
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# very soon.
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notify 10 {
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match "system" "ACPI";
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match "subsystem" "Thermal";
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match "notify" "0xcc";
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action "logger -p kern.emerg 'WARNING: system temperature too high, shutting down soon!'";
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};
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# User requested suspend, so perform preparation steps and then execute
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# the actual suspend process.
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notify 10 {
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match "system" "ACPI";
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match "subsystem" "Suspend";
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action "/etc/rc.suspend acpi $notify";
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};
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notify 10 {
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match "system" "ACPI";
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match "subsystem" "Resume";
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action "/etc/rc.resume acpi $notify";
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};
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/* EXAMPLES TO END OF FILE
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# An example of something that a vendor might install if you were to
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# add their device. This might reside in /usr/local/etc/devd/deqna.conf.
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# A deqna is, in this hypothetical example, a pccard ethernet-like device.
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# Students of history may know other devices by this name, and will get
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# the in-jokes in this entry.
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nomatch 10 {
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match "bus" "pccard[0-9]+";
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match "manufacturer" "0x1234";
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match "product" "0x2323";
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action "kldload if_deqna";
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};
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attach 10 {
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device-name "deqna[0-9]+";
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action "/etc/pccard_ether $device-name start";
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};
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detach 10 {
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device-name "deqna[0-9]+";
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action "/etc/pccard_ether $device-name stop";
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};
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# Examples of notify hooks. A notify is a generic way for a kernel
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# subsystem to send event notification to userland.
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# Here are some examples of ACPI notify handlers. ACPI subsystems that
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# generate notifies include the AC adapter, power/sleep buttons,
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# control method batteries, lid switch, and thermal zones.
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#
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# Information returned is not always the same as the ACPI notify
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# events. See the ACPI specification for more information about
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# notifies. Here is the information returned for each subsystem:
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#
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# ACAD: AC line state (0 is offline, 1 is online)
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# Button: Button pressed (0 for power, 1 for sleep)
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# CMBAT: ACPI battery events
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# Lid: Lid state (0 is closed, 1 is open)
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# RCTL: Resource limits
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# Suspend, Resume: Suspend and resume notification
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# Thermal: ACPI thermal zone events
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#
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# This example calls a script when the AC state changes, passing the
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# notify value as the first argument. If the state is 0x00, it might
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# call some sysctls to implement economy mode. If 0x01, it might set
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# the mode to performance.
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notify 10 {
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match "system" "ACPI";
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match "subsystem" "ACAD";
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action "/etc/acpi_ac $notify";
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};
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# This example works around a memory leak in PostgreSQL, restarting
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# it when the "user:pgsql:swap:devctl=1G" rctl(8) rule gets triggered.
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notify 0 {
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match "system" "RCTL";
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match "rule" "user:70:swap:.*";
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action "/usr/local/etc/rc.d/postgresql restart";
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};
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# Discard autofs caches, useful for the -media special map.
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notify 100 {
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match "system" "GEOM";
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match "subsystem" "DEV";
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action "/usr/sbin/automount -c";
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};
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# Handle userland coredumps.
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# This commented out handler makes it possible to run an
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# automated debugging session after the core dump is generated.
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# Replace action with a proper coredump handler, but be aware that
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# it will run with elevated privileges.
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notify 10 {
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match "system" "kernel";
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match "subsystem" "signal";
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match "type" "coredump";
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action "logger $comm $core";
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};
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*/
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