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-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<refentry id="kdbus_fs">
-
- <refentryinfo>
- <title>kdbus.fs</title>
- <productname>kdbus.fs</productname>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>kdbus.fs</refentrytitle>
- <manvolnum>7</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>kdbus.fs</refname>
- <refpurpose>kdbus file system</refpurpose>
- </refnamediv>
-
- <refsect1>
- <title>File-system Layout</title>
-
- <para>
- The <emphasis>kdbusfs</emphasis> pseudo filesystem provides access to
- kdbus entities, such as <emphasis>buses</emphasis> and
- <emphasis>endpoints</emphasis>. Each time the filesystem is mounted,
- a new, isolated kdbus instance is created, which is independent from the
- other instances.
- </para>
- <para>
- The system-wide standard mount point for <emphasis>kdbusfs</emphasis> is
- <constant>/sys/fs/kdbus</constant>.
- </para>
-
- <para>
- Buses are represented as directories in the file system layout, whereas
- endpoints are exposed as files inside these directories. At the top-level,
- a <emphasis>control</emphasis> node is present, which can be opened to
- create new buses via the <constant>KDBUS_CMD_BUS_MAKE</constant> ioctl.
- Each <emphasis>bus</emphasis> shows a default endpoint called
- <varname>bus</varname>, which can be opened to either create a connection
- with the <constant>KDBUS_CMD_HELLO</constant> ioctl, or to create new
- custom endpoints for the bus with
- <constant>KDBUS_CMD_ENDPOINT_MAKE</constant>. See
- <citerefentry>
- <refentrytitle>kdbus.bus</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>,
- <citerefentry>
- <refentrytitle>kdbus.connection</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry> and
- <citerefentry>
- <refentrytitle>kdbus.endpoint</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>
- for more details.
- </para>
-
- <para>Following, you can see an example layout of the
- <emphasis>kdbusfs</emphasis> filesystem:</para>
-
-<programlisting>
- /sys/fs/kdbus/ ; mount-point
- |-- 0-system ; bus directory
- | |-- bus ; default endpoint
- | `-- 1017-custom ; custom endpoint
- |-- 1000-user ; bus directory
- | |-- bus ; default endpoint
- | |-- 1000-service-A ; custom endpoint
- | `-- 1000-service-B ; custom endpoint
- `-- control ; control file
-</programlisting>
- </refsect1>
-
- <refsect1>
- <title>Mounting instances</title>
- <para>
- In order to get a new and separate kdbus environment, a new instance
- of <emphasis>kdbusfs</emphasis> can be mounted like this:
- </para>
-<programlisting>
- # mount -t kdbusfs kdbusfs /tmp/new_kdbus/
-</programlisting>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <simplelist type="inline">
- <member>
- <citerefentry>
- <refentrytitle>kdbus</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>
- </member>
- <member>
- <citerefentry>
- <refentrytitle>kdbus.bus</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>
- </member>
- <member>
- <citerefentry>
- <refentrytitle>kdbus.connection</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>
- </member>
- <member>
- <citerefentry>
- <refentrytitle>kdbus.endpoint</refentrytitle>
- <manvolnum>7</manvolnum>
- </citerefentry>
- </member>
- <member>
- <citerefentry>
- <refentrytitle>mount</refentrytitle>
- <manvolnum>8</manvolnum>
- </citerefentry>
- </member>
- </simplelist>
- </refsect1>
-</refentry>