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-.. SPDX-License-Identifier: GPL-2.0
-
-UDEV rules for DVB
-==================
-
-.. note::
-
- #) This documentation is outdated. Udev on modern distributions auto-detect
- the DVB devices.
-
- #) **TODO:** change this document to explain how to make DVB devices
- persistent, as, when a machine has multiple devices, they may be detected
- on different orders, which could cause apps that relies on the device
- numbers to fail.
-
-The DVB subsystem currently registers to the sysfs subsystem using the
-"class_simple" interface.
-
-This means that only the basic information like module loading parameters
-are presented through sysfs. Other things that might be interesting are
-currently **not** available.
-
-Nevertheless it's now possible to add proper udev rules so that the
-DVB device nodes are created automatically.
-
-We assume that you have udev already up and running and that have been
-creating the DVB device nodes manually up to now due to the missing sysfs
-support.
-
-0. Don't forget to disable your current method of creating the
-device nodes manually.
-
-1. Unfortunately, you'll need a helper script to transform the kernel
-sysfs device name into the well known dvb adapter / device naming scheme.
-The script should be called "dvb.sh" and should be placed into a script
-dir where udev can execute it, most likely /etc/udev/scripts/
-
-So, create a new file /etc/udev/scripts/dvb.sh and add the following:
-
-.. code-block:: none
-
- #!/bin/sh
- /bin/echo $1 | /bin/sed -e 's,dvb\([0-9]\)\.\([^0-9]*\)\([0-9]\),dvb/adapter\1/\2\3,'
-
-Don't forget to make the script executable with "chmod".
-
-1. You need to create a proper udev rule that will create the device nodes
-like you know them. All real distributions out there scan the /etc/udev/rules.d
-directory for rule files. The main udev configuration file /etc/udev/udev.conf
-will tell you the directory where the rules are, most likely it's /etc/udev/rules.d/
-
-Create a new rule file in that directory called "dvb.rule" and add the following line:
-
-.. code-block:: none
-
- KERNEL="dvb*", PROGRAM="/etc/udev/scripts/dvb.sh %k", NAME="%c"
-
-If you want more control over the device nodes (for example a special group membership)
-have a look at "man udev".
-
-For every device that registers to the sysfs subsystem with a "dvb" prefix,
-the helper script /etc/udev/scripts/dvb.sh is invoked, which will then
-create the proper device node in your /dev/ directory.