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I have a very slow Bluetooth adapter hotplug event call, so we need to increase the event timeout to something larger than 6 seconds. Apr 1 02:54:08 pim udevsend[12119]: main: DEVPATH = '/class/tty/ttyUB0' Apr 1 02:54:08 pim udevsend[12119]: main: SEQNUM = '340' Apr 1 02:54:08 pim udevsend[12120]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1' Apr 1 02:54:08 pim udevsend[12120]: main: SEQNUM = '344' Apr 1 02:54:09 pim udevsend[12133]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.1' Apr 1 02:54:09 pim udevsend[12133]: main: SEQNUM = '342' Apr 1 02:54:10 pim udevsend[12136]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.2' Apr 1 02:54:10 pim udevsend[12136]: main: SEQNUM = '343' Apr 1 02:54:13 pim udevsend[12141]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0' Apr 1 02:54:13 pim udevsend[12141]: main: SEQNUM = '341'
57 lines
1.5 KiB
Groff
57 lines
1.5 KiB
Groff
.TH UDEVD 8 "February 2004" "" "Linux Administrator's Manual"
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.SH NAME
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udevd \- udev event serializer daemon
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.br
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udevsend \- sends the event to udevd
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.SH SYNOPSIS
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.BI udevsend " hotplug-subsystem"
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.sp
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The environment must provide the following variables:
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.TP
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.B ACTION
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.IR add " or " remove
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signifies the connection or disconnection of a device.
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.TP
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.B DEVPATH
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The sysfs devpath of the device without the mountpoint but a leading slash.
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.TP
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.B SEQNUM
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The sequence number of the event provided by the kernel.
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If unset, the event bypasses the queue and will be executed immediately.
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.SH "DESCRIPTION"
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.B udevd
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allows the serialization of
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.BR hotplug (8)
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events. The events generated by the kernel may arrive in random order
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in userspace, that makes it neccessary to reorder them.
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.br
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.B udevd
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takes care of the kernel supplied sequence number and arranges the events for
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execution in the correct order. Missing sequences delay the execution of the
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following events until a timeout is reached.
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.br
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For each event a
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.BR udev (8)
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instance is executed in the background. All further events for the same device
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are delayed until the execution is finished. This way there will never be more
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than one instance running for a single device at the same time.
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.br
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.B udevd
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receives the events from
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.B udevsend
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which is called by
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.BR hotplug (8).
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If
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.B udevd
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isn't already running,
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.B udevsend
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will start it.
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.SH "SEE ALSO"
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.BR udev (8),
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.BR udevinfo (8),
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.BR hotplug (8)
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.SH AUTHORS
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.B udevd
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was developed primarily by Kay Sievers <kay.sievers@vrfy.org>, with much help
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from others.
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