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Thanks to Christian Gierke, he sent me a beauty patch for our man pages. Some typos are fixed and a few word are clarified.
57 lines
1.6 KiB
Groff
57 lines
1.6 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 of a maximum of 5 seconds 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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