diff options
| -rw-r--r-- | udev.8 | 84 |
1 files changed, 73 insertions, 11 deletions
@@ -27,16 +27,73 @@ On device removal, .B udev queries the internal database for the name of the device file to be deleted. .SH "CONFIGURATION" +All udev configuration files consist of a set of lines of text. All empty +lines, and lines beginning with a '#' will be ignored. +.P + .B udev -expects its configuration at -.I /etc/udev/udev.config. -The file consists of a set of lines. All empty lines and -lines beginning with a '#' will be ignored. +expects its main configuration file at +.I /etc/udev/udev.conf. +The file consists of a set of variables and values that allow the user to +override default udev values. The current set of variables that can be +overridden in this file is: +.TP +.B udev_root +This is the where in the filesystem to place the device nodes. The default +value for this is +.I /udev/ +.TP +.B udev_db +The name and location of the udev database. The default value for this is +.I /udev/.udev.tdb +.TP +.B udev_rules +This is the location of the udev rules file. The default value for this is +.I /etc/udev/udev.rules +.TP +.B udev_permissions +This is the location of the udev permission file. The default value for this is +.I /etc/udev/udev.permissions +.TP +.B default_mode +This is the default mode for all nodes that have no explicit match in the +permissions file. The default value for this is +.I 0666 .br -Every line defines the mapping between device attributes and the device file -name. It starts with a keyword defining the method used to match, followed by -one ore more keys to compare and the filename for the device. If no matching -configuration is found, the default kernel device name is used. +.P +A sample \fIudev.conf\fP might look like this: +.sp +.nf +# udev_root - where in the filesystem to place the device nodes +udev_root="/udev/" + +# udev_db - The name and location of the udev database. +udev_db="/udev/.udev.tdb" + +# udev_rules - The name and location of the udev rules file +udev_rules="/etc/udev/udev.rules" + +# 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 +# explicit match in the permissions file +default_mode="0666" +.fi +.P +The rules for udev to use when naming devices may specified at +.I /etc/udev/udev.rules +or specified by the +.I udev_rules +value in the +.I /etc/udev/udev.conf +file. +.P +Every line in the rules file define the mapping between device attributes and +the device file name. It starts with a keyword defining the method used to +match, followed by one ore more keys to compare and the filename for the +device. If no matching configuration is found, the default kernel device name +is used. .P The line format is: .RS @@ -113,7 +170,7 @@ For partitions, this will result in 'part%n' If this is not a partition, it will result in 'disk' .RE .P -A sample \fIudev.conf\fP might look like this: +A sample \fIudev.rules\fP might look like this: .sp .nf # if /sbin/scsi_id returns "OEM 0815" device will be called disk1 @@ -136,7 +193,12 @@ LABEL, BUS="usb", model="WebCam Version 3", NAME="webcam%n" .fi .P Permissions and ownership for the created device files may specified at -.I /etc/udev/udev.permissions. +.I /etc/udev/udev.permissions +or specified by the +.I udev_permission +value in the +.I /etc/udev/udev.conf +file. The file consists of a set of lines. All empty lines and lines beginning with a '#' will be ignored. .br @@ -164,7 +226,7 @@ dsp1:::0666 .ft B .ft /sbin/udev udev program -/etc/udev/* udev config and database files +/etc/udev/* udev config files /etc/hotplug.d/default/udev.hotplug hotplug symlink to udev program .fi .LP |