[PATCH] add IGNORE rule type

[elogind.git] / udev.8

diff --git a/udev.8 b/udev.8
index 0a0640ad8c95d633e76cd2704f95d86077bc63ed..3eb4aecad27b8adbbe3f92f1709d214cb867b10c 100644 (file)
--- a/udev.8
+++ b/udev.8
@@ -3,6 +3,9 @@
 udev \- Linux configurable dynamic device naming support
 .SH SYNOPSIS
 .BI udev " hotplug-subsystem"
 udev \- Linux configurable dynamic device naming support
 .SH SYNOPSIS
 .BI udev " hotplug-subsystem"

+.br
+.B udev
+.RI "[-q " sysfs_path "] [-rVh]"

 .SH "DESCRIPTION"
 .B udev
 creates or removes device node files usually located in the /dev directory.
 .SH "DESCRIPTION"
 .B udev
 creates or removes device node files usually located in the /dev directory.


@@ -26,6 +29,27 @@ maintains a database for devices present on the system.
 On device removal,
 .B udev
 queries the internal database for the name of the device file to be deleted.
 On device removal,
 .B udev
 queries the internal database for the name of the device file to be deleted.

+.SH "OPTIONS"
+.B udev
+normally is called by
+.B hotplug
+with the subsystem as argument and various environment variables set.
+.br
+It may also called with the following options:
+.TP
+.B -V
+Print the version information.
+.TP
+.B -r
+Print the the
+.B udev
+root directory.
+.TP
+.BI -q " sysfs_path"
+Query with the sysfs path as argument for the name of the created device node.
+.TP
+.B -h
+Print help text.

 .SH "CONFIGURATION"
 All
 .B udev
 .SH "CONFIGURATION"
 All
 .B udev


@@ -78,7 +102,7 @@ udev_rules="/etc/udev/udev.rules"
 # udev_permissions - The name and location of the udev permission file
 udev_permissions="/etc/udev/udev.permissions"
 
 # udev_permissions - The name and location of the udev permission file
 udev_permissions="/etc/udev/udev.permissions"
 

-# default_mode - set the default mode for all nodes that have no 
+# default_mode - set the default mode for all nodes that have no

 #                explicit match in the permissions file
 default_mode="0666"
 .fi
 #                explicit match in the permissions file
 default_mode="0666"
 .fi


@@ -106,17 +130,20 @@ The line format is:
 where valid methods with corresponding keys are:
 .TP
 .B CALLOUT
 where valid methods with corresponding keys are:
 .TP
 .B CALLOUT

-calling external program, that returns a string to match.  The 
-.BR BUS 
+calling external program, that returns a string to match.  The
+.B BUS

 key is optional, but if specified, the sysfs device bus must be able to be
 key is optional, but if specified, the sysfs device bus must be able to be

-detemined by a "device" symlink.
+determined by a "device" symlink.

 .br
 .RB "keys: " BUS ", " PROGRAM ", " ID
 .TP
 .B LABEL
 device label or serial number, like USB serial number, SCSI UUID or
 file system label.  Up to 5 different sysfs files can be checked, with
 .br
 .RB "keys: " BUS ", " PROGRAM ", " ID
 .TP
 .B LABEL
 device label or serial number, like USB serial number, SCSI UUID or
 file system label.  Up to 5 different sysfs files can be checked, with

-all of the values being required in order to match the rule.
+all of the values being required in order to match the rule.  The
+.B BUS
+key is optional, but if specified, the sysfs device bus must be able to be
+detemined by a "device" symlink.

 .br
 .RB "keys: " BUS ", " SYSFS_
 .TP
 .br
 .RB "keys: " BUS ", " SYSFS_
 .TP


@@ -134,9 +161,15 @@ device position on bus, like physical port of USB device
 string replacement of the kernel device name
 .br
 .RB "key: " KERNEL
 string replacement of the kernel device name
 .br
 .RB "key: " KERNEL

+.TP
+.B IGNORE
+tell udev to not care about creation of this device, e.g. because the
+device is already handled by another program
+.br
+.RB "key: " KERNEL

 .P
 The methods are applied in the following order:
 .P
 The methods are applied in the following order:

-.BR CALLOUT ", " LABEL ", " NUMBER ", " TOPOLOGY ", " REPLACE "."
+.BR IGNORE ", " CALLOUT ", " LABEL ", " NUMBER ", " TOPOLOGY ", " REPLACE "."

 .P
 .RB "The " NAME " ," SYMLINK " and " PROGRAM
 fields support simple printf-like string substitution:
 .P
 .RB "The " NAME " ," SYMLINK " and " PROGRAM
 fields support simple printf-like string substitution: