GNU/Linux man pages
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GNU/Linux |
CentOS 4.8 |
i386 |
 |
udevd(8) |
 |
udevd, udevdsend − udev event serializer daemon and udev event sender
udevsend hotplug-subsystem
The environment must provide the following variables:
|
ACTION |
add or remove signifies the connection or disconnection of a device. |
DEVPATH
The sysfs devpath of the device without the mountpoint but a leading slash.
|
SEQNUM |
The sequence number of the event provided by the kernel. If unset, the event bypasses the queue and will be executed immediately. |
udevd
allows the serialization of hotplug(8) events. The
events generated by the kernel may arrive in random order in
userspace, that makes it neccessary to reorder them.
udevd takes care of the kernel supplied sequence number
and arranges the events for execution in the correct order.
Missing sequences delay the execution of the following
events until a timeout is reached.
For each event a udev(8) instance is executed in the
background. All further events for the same device are
delayed until the execution is finished. This way there will
never be more than one instance running for a single device
at the same time.
udevd receives the events from udevsend which is
called by hotplug(8). If udevd isn’t
already running, udevsend will start it.
udev(8), udevinfo(8), hotplug(8)
udevd was developed primarily by Kay Sievers <kay.sievers@vrfy.org>, with much help from others.
|
udevd(8) | |