summaryrefslogtreecommitdiff
path: root/udevd.8
diff options
context:
space:
mode:
authorgreg@kroah.com <greg@kroah.com>2004-04-02 00:13:20 -0800
committerGreg KH <gregkh@suse.de>2005-04-26 21:35:14 -0700
commitc19b069189fc31ff07bf482cf77fcf25549501b4 (patch)
tree474bd78067df796dc0cc5965bdf8bf7e722ae5c6 /udevd.8
parent487c1b35ba1d0a2f76d99dc9b9454e2895f915bb (diff)
[PATCH] update bk ignore list some more.
Diffstat (limited to 'udevd.8')
-rw-r--r--udevd.856
1 files changed, 56 insertions, 0 deletions
diff --git a/udevd.8 b/udevd.8
new file mode 100644
index 0000000000..9d0127b6bc
--- /dev/null
+++ b/udevd.8
@@ -0,0 +1,56 @@
+.TH UDEVD 8 "February 2004" "" "Linux Administrator's Manual"
+.SH NAME
+udevd \- udev event serializer daemon
+.br
+udevsend \- sends the event to udevd
+.SH SYNOPSIS
+.BI udevsend " hotplug-subsystem"
+.sp
+The environment must provide the following variables:
+.TP
+.B ACTION
+.IR add " or " remove
+signifies the connection or disconnection of a device.
+.TP
+.B DEVPATH
+The sysfs devpath of the device without the mountpoint but a leading slash.
+.TP
+.B SEQNUM
+The sequence number of the event provided by the kernel.
+If unset, the event bypasses the queue and will be executed immediately.
+.SH "DESCRIPTION"
+.B udevd
+allows the serialization of
+.BR hotplug (8)
+events. The events generated by the kernel may arrive in random order
+in userspace, that makes it neccessary to reorder them.
+.br
+.B 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 of a maximum of 5 seconds is reached.
+.br
+For each event a
+.BR 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.
+.br
+.B udevd
+receives the events from
+.B udevsend
+which is called by
+.BR hotplug (8).
+If
+.B udevd
+isn't already running,
+.B udevsend
+will start it.
+.SH "SEE ALSO"
+.BR udev (8),
+.BR udevinfo (8),
+.BR hotplug (8)
+.SH AUTHORS
+.B udevd
+was developed primarily by Kay Sievers <kay.sievers@vrfy.org>, with much help
+from others.