HOTPLUGD(8) OpenBSD System Manager's Manual HOTPLUGD(8)NAMEhotplugd - devices hot plugging monitor daemon
SYNOPSIShotplugd [-d device]
DESCRIPTION
The hotplugd daemon monitors the hotplug(4) pseudo-device, acting on
signaled events by executing the scripts in the /etc/hotplug directory.
By default it uses the /dev/hotplug device for reading events from, but
an alternative device can be specified with the -d option.
Actions can be configured either for device attachment or detachment. On
device attachment the attach script is executed if it exists. On device
detachment the detach script is executed if it exists. In both cases two
parameters are passed to the scripts: the class and name of the attached
or detached device. The device class corresponds to the classes
described in the <sys/device.h> header file and can be one of the
following:
0 generic, no special info
1 CPU (carries resource utilization)
2 disk drive
3 network interface
4 tape device
5 serial line interface
Not all classes are really usable. For example, it's unlikely that a CPU
will be hotplugged.
The device name is the usual name, as listed in MAKEDEV(8), and the unit
number, e.g. sd1.
FILES
/dev/hotplug Pseudo-device file.
/etc/hotplug Directory where the scripts to execute are located.
/etc/hotplug/attach Script to execute on device attachment.
/etc/hotplug/detach Script to execute on device detachment.
EXAMPLES
Sample attach script:
#!/bin/sh
DEVCLASS=$1
DEVNAME=$2
case $DEVCLASS in
2)
# disk devices
disklabel=`/sbin/disklabel $DEVNAME 2>&1 | \
sed -n '/^label: /s/^label: //p'`
case $disklabel in
Sony*DSC*)
# Sony DSC camera
mount -o nodev,nosuid /dev/"$DEVNAME"i /mnt/camera
;;
esac
;;
3)
# network devices; requires hostname.$DEVNAME
sh /etc/netstart $DEVNAME
;;
esac
SEE ALSOhotplug(4)HISTORY
The hotplugd program first appeared in OpenBSD 3.6.
AUTHORS
The hotplugd program was written by Alexander Yurchenko
<grange@openbsd.org>.
OpenBSD 4.9 March 20, 2009 OpenBSD 4.9
