udev - man page update

@@ -3,11 +3,34 @@
 udev \- Linux configurable dynamic device naming support
 .SH SYNOPSIS
 .BI udev " hotplug-subsystem"
+.P
+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.
+.P
+Additional optional environment variables are:
+.TP
+.B UDEV_CONFIG_FILE
+Overrides the default location of the
+.B udev
+config file.
+.TP
+.B UDEV_NO_SLEEP
+The default behavior of
+.B udev
+is to wait until all the sysfs files of the device chain are populated. If set
+.B udev
+will will continue, regardless of the state of the device representation.
 .SH "DESCRIPTION"
 .B udev
 creates or removes device node files usually located in the /dev directory.
-Its goal is to provide a dynamic device directory that contains only the files
-for devices that are actually present.
+It provides a dynamic device directory that contains only the files for
+devices that are actually present.
 .P
 As part of the
 .B hotplug

@@ -159,6 +182,11 @@
 .TP
 .B PROGRAM
 Call external program. This key is valid if the program returns successful.
+A few command line options may specified, but shell characters like pipe,
+diversion or similiar options are not available. The environment variables of
+.B udev
+are also available for the program.
+.br
 The string returned by the program may additionally matched with the
 .B RESULT
 key.

@@ -285,6 +313,7 @@
 .LP
 .SH "SEE ALSO"
 .BR udevinfo (8),
+.BR udevd (8),
 .BR hotplug (8)
 .PP
 The

@@ -3,6 +3,21 @@
 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

@@ -33,7 +48,9 @@
 .B udevsend
 will start it.
 .SH "SEE ALSO"
-.BR udev (8), " hotplug" (8)
+.BR udev (8),
+.BR udevinfo (8),
+.BR hotplug (8)
 .SH AUTHORS
 .B udevd
 was developed primarily by Kay Sievers <[email protected]>, with much help

@@ -151,16 +151,15 @@
 Every line in the rules file defines the mapping between device attributes
 and the device file name. One ore more keys are specified to match a rule
 with the current device. If all keys are matching, the rule will be applied
-and the name is used for the device node. One or more optional symlinks
-targeting the node may be specified.
+and the name is used for the device node.
 .br
 If no matching rule is found, the default kernel device name is used.
 .P
-The line format is:
+Every rule consists of a list a comma separated fields:
 .sp
-.I key,[key,...] name [, symlink]
+.IR "key " ,[ "key " ,...] " name " [, " symlink" ]
 .sp
-where keys are:
+where possible fields are:
 .TP
 .B BUS
 Match the bus type of the device.

@@ -196,13 +195,19 @@
 call. This key may used in any following rule after a
 .B PROGRAM
 call.
-.P
-The
+.TP
 .B NAME
-field given with the attribute
+The name of the node to be created. If the name field is omitted or its
+value is empty, the device will be ignored and no node will be created.
+.br
+If given with the attribute
 .BR NAME{ all_partitions }
-will  create all 15 partitions of a blockdevice.
+it will  create all 15 partitions of a blockdevice.
 This may be useful for removable media devices.
+.TP
+.B SYMLINK
+The name of a symlink targeting the node. Multiple symlinks may be
+specified by separating the names by the space character.
 .P
 .RB "The " NAME " ," SYMLINK " and " PROGRAM
 fields support simple printf-like string substitution:

@@ -51,6 +51,10 @@
 # DRI devices always go into a subdirectory (as per the LSB spec)
 KERNEL="card*", NAME="dri/card%n"
 
+# create all 15 partitions of a USB flash card reader
+# note the trailing spaces in the attribute, use udevinfo(8) to examine your device
+BUS="scsi", SYSFS{model}="CF/MD           ", NAME{all_partitions}="compactflash"
+
 # alsa devices
 KERNEL="controlC[0-9]*", NAME="snd/%k"
 KERNEL="hw[CD0-9]*",     NAME="snd/%k"