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diff --git a/src/grp-udev/udevadm/udevadm.xml b/src/grp-udev/udevadm/udevadm.xml new file mode 100644 index 0000000000..8c1abd2770 --- /dev/null +++ b/src/grp-udev/udevadm/udevadm.xml @@ -0,0 +1,576 @@ +<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + +<refentry id="udevadm"> + <refentryinfo> + <title>udevadm</title> + <productname>systemd</productname> + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Kay</firstname> + <surname>Sievers</surname> + <email>kay@vrfy.org</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>udevadm</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>udevadm</refname><refpurpose>udev management tool</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis> + <command>udevadm</command> + <arg><option>--debug</option></arg> + <arg><option>--version</option></arg> + <arg><option>--help</option></arg> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm info <replaceable>options</replaceable></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm trigger <optional>options</optional></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm settle <optional>options</optional></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm control <replaceable>command</replaceable></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm monitor <optional>options</optional></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command> + </cmdsynopsis> + <cmdsynopsis> + <command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1><title>Description</title> + <para><command>udevadm</command> expects a command and command + specific options. It controls the runtime behavior of + <command>systemd-udevd</command>, requests kernel events, manages + the event queue, and provides simple debugging mechanisms.</para> + </refsect1> + + <refsect1><title>Options</title> + <variablelist> + <varlistentry> + <term><option>--debug</option></term> + <listitem> + <para>Print debug messages to standard error.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>--version</option></term> + <listitem> + <para>Print version number.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + + <refsect2><title>udevadm info + <arg choice="opt"><replaceable>options</replaceable></arg> + <arg choice="opt"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg> + </title> + + <para>Queries the udev database for device information + stored in the udev database. It can also query the properties + of a device from its sysfs representation to help creating udev + rules that match this device.</para> + <variablelist> + <varlistentry> + <term><option>-q</option></term> + <term><option>--query=<replaceable>TYPE</replaceable></option></term> + <listitem> + <para>Query the database for the specified type of device + data. It needs the <option>--path</option> or + <option>--name</option> to identify the specified device. + Valid <replaceable>TYPE</replaceable>s are: + <constant>name</constant>, <constant>symlink</constant>, + <constant>path</constant>, <constant>property</constant>, + <constant>all</constant>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-p</option></term> + <term><option>--path=<replaceable>DEVPATH</replaceable></option></term> + <listitem> + <para>The <filename>/sys</filename> path of the device to + query, e.g. + <filename><optional>/sys</optional>/class/block/sda</filename>. + Note that this option usually is not very useful, since + <command>udev</command> can guess the type of the + argument, so <command>udevadm + --devpath=/class/block/sda</command> is equivalent to + <command>udevadm /sys/class/block/sda</command>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-n</option></term> + <term><option>--name=<replaceable>FILE</replaceable></option></term> + <listitem> + <para>The name of the device node or a symlink to query, + e.g. <filename><optional>/dev</optional>/sda</filename>. + Note that this option usually is not very useful, since + <command>udev</command> can guess the type of the + argument, so <command>udevadm --name=sda</command> is + equivalent to <command>udevadm /dev/sda</command>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-r</option></term> + <term><option>--root</option></term> + <listitem> + <para>Print absolute paths in <command>name</command> or <command>symlink</command> + query.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-a</option></term> + <term><option>--attribute-walk</option></term> + <listitem> + <para>Print all sysfs properties of the specified device that can be used + in udev rules to match the specified device. It prints all devices + along the chain, up to the root of sysfs that can be used in udev rules.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-x</option></term> + <term><option>--export</option></term> + <listitem> + <para>Print output as key/value pairs. Values are enclosed in single quotes.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-P</option></term> + <term><option>--export-prefix=<replaceable>NAME</replaceable></option></term> + <listitem> + <para>Add a prefix to the key name of exported values.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-d</option></term> + <term><option>--device-id-of-file=<replaceable>FILE</replaceable></option></term> + <listitem> + <para>Print major/minor numbers of the underlying device, where the file + lives on.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-e</option></term> + <term><option>--export-db</option></term> + <listitem> + <para>Export the content of the udev database.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-c</option></term> + <term><option>--cleanup-db</option></term> + <listitem> + <para>Cleanup the udev database.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>--version</option></term> + <listitem> + <para>Print version.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + + <para>In addition, an optional positional argument can be used + to specify a device name or a sys path. It must start with + <filename>/dev</filename> or <filename>/sys</filename> + respectively.</para> + </refsect2> + + <refsect2><title>udevadm trigger + <arg choice="opt"><replaceable>options</replaceable></arg> + <arg choice="opt" rep="repeat"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg></title> + <para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para> + <variablelist> + <varlistentry> + <term><option>-v</option></term> + <term><option>--verbose</option></term> + <listitem> + <para>Print the list of devices which will be triggered.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-n</option></term> + <term><option>--dry-run</option></term> + <listitem> + <para>Do not actually trigger the event.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-t</option></term> + <term><option>--type=<replaceable>TYPE</replaceable></option></term> + <listitem> + <para>Trigger a specific type of devices. Valid types are: + <command>devices</command>, <command>subsystems</command>. + The default value is <command>devices</command>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-c</option></term> + <term><option>--action=<replaceable>ACTION</replaceable></option></term> + <listitem> + <para>Type of event to be triggered. The default value is + <command>change</command>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-s</option></term> + <term><option>--subsystem-match=<replaceable>SUBSYSTEM</replaceable></option></term> + <listitem> + <para>Trigger events for devices which belong to a + matching subsystem. This option can be specified multiple + times and supports shell style pattern matching.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-S</option></term> + <term><option>--subsystem-nomatch=<replaceable>SUBSYSTEM</replaceable></option></term> + <listitem> + <para>Do not trigger events for devices which belong to a matching subsystem. This option + can be specified multiple times and supports shell style pattern matching.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-a</option></term> + <term><option>--attr-match=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> + <listitem> + <para>Trigger events for devices with a matching sysfs + attribute. If a value is specified along with the + attribute name, the content of the attribute is matched + against the given value using shell style pattern + matching. If no value is specified, the existence of the + sysfs attribute is checked. This option can be specified + multiple times.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-A</option></term> + <term><option>--attr-nomatch=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> + <listitem> + <para>Do not trigger events for devices with a matching + sysfs attribute. If a value is specified along with the + attribute name, the content of the attribute is matched + against the given value using shell style pattern + matching. If no value is specified, the existence of the + sysfs attribute is checked. This option can be specified + multiple times.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-p</option></term> + <term><option>--property-match=<replaceable>PROPERTY</replaceable>=<replaceable>VALUE</replaceable></option></term> + <listitem> + <para>Trigger events for devices with a matching property + value. This option can be specified multiple times and + supports shell style pattern matching.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-g</option></term> + <term><option>--tag-match=<replaceable>PROPERTY</replaceable></option></term> + <listitem> + <para>Trigger events for devices with a matching tag. This + option can be specified multiple times.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-y</option></term> + <term><option>--sysname-match=<replaceable>PATH</replaceable></option></term> + <listitem> + <para>Trigger events for devices with a matching sys + device path. This option can be specified multiple times + and supports shell style pattern matching.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>--name-match=<replaceable>NAME</replaceable></option></term> + <listitem> + <para>Trigger events for devices with a matching + device path. This option can be specified multiple + times.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-b</option></term> + <term><option>--parent-match=<replaceable>SYSPATH</replaceable></option></term> + <listitem> + <para>Trigger events for all children of a given + device.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + + <para>In addition, optional positional arguments can be used + to specify device names or sys paths. They must start with + <filename>/dev</filename> or <filename>/sys</filename> + respectively.</para> + </refsect2> + + <refsect2><title>udevadm settle + <arg choice="opt"><replaceable>options</replaceable></arg> + </title> + <para>Watches the udev event queue, and exits if all current events are handled.</para> + <variablelist> + <varlistentry> + <term><option>-t</option></term> + <term><option>--timeout=<replaceable>SECONDS</replaceable></option></term> + <listitem> + <para>Maximum number of seconds to wait for the event + queue to become empty. The default value is 120 seconds. A + value of 0 will check if the queue is empty and always + return immediately.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-E</option></term> + <term><option>--exit-if-exists=<replaceable>FILE</replaceable></option></term> + <listitem> + <para>Stop waiting if file exists.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect2> + + <refsect2><title>udevadm control <replaceable>command</replaceable></title> + <para>Modify the internal state of the running udev daemon.</para> + <variablelist> + <varlistentry> + <term><option>-x</option></term> + <term><option>--exit</option></term> + <listitem> + <para>Signal and wait for systemd-udevd to exit.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-l</option></term> + <term><option>--log-priority=<replaceable>value</replaceable></option></term> + <listitem> + <para>Set the internal log level of + <filename>systemd-udevd</filename>. Valid values are the + numerical syslog priorities or their textual + representations: <option>emerg</option>, + <option>alert</option>, <option>crit</option>, + <option>err</option>, <option>warning</option>, + <option>notice</option>, <option>info</option>, and + <option>debug</option>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-s</option></term> + <term><option>--stop-exec-queue</option></term> + <listitem> + <para>Signal systemd-udevd to stop executing new events. Incoming events + will be queued.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-S</option></term> + <term><option>--start-exec-queue</option></term> + <listitem> + <para>Signal systemd-udevd to enable the execution of events.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-R</option></term> + <term><option>--reload</option></term> + <listitem> + <para>Signal systemd-udevd to reload the rules files and other databases like the kernel + module index. Reloading rules and databases does not apply any changes to already + existing devices; the new configuration will only be applied to new events.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-p</option></term> + <term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term> + <listitem> + <para>Set a global property for all events.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-m</option></term> + <term><option>--children-max=</option><replaceable>value</replaceable></term> + <listitem> + <para>Set the maximum number of events, systemd-udevd will handle at the + same time.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>--timeout=</option><replaceable>seconds</replaceable></term> + <listitem> + <para>The maximum number of seconds to wait for a reply from systemd-udevd.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect2> + + <refsect2><title>udevadm monitor + <arg choice="opt"><replaceable>options</replaceable></arg> + </title> + <para>Listens to the kernel uevents and events sent out by a udev rule + and prints the devpath of the event to the console. It can be used to analyze the + event timing, by comparing the timestamps of the kernel uevent and the udev event. + </para> + <variablelist> + <varlistentry> + <term><option>-k</option></term> + <term><option>--kernel</option></term> + <listitem> + <para>Print the kernel uevents.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-u</option></term> + <term><option>--udev</option></term> + <listitem> + <para>Print the udev event after the rule processing.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-p</option></term> + <term><option>--property</option></term> + <listitem> + <para>Also print the properties of the event.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-s</option></term> + <term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term> + <listitem> + <para>Filter events by subsystem[/devtype]. Only udev events with a matching subsystem value will pass.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-t</option></term> + <term><option>--tag-match=<replaceable>string</replaceable></option></term> + <listitem> + <para>Filter events by property. Only udev events with a given tag attached will pass.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect2> + + <refsect2><title>udevadm test + <arg choice="opt"><replaceable>options</replaceable></arg> + <arg><replaceable>devpath</replaceable></arg> + </title> + <para>Simulate a udev event run for the given device, and print debug output.</para> + <variablelist> + <varlistentry> + <term><option>-a</option></term> + <term><option>--action=<replaceable>string</replaceable></option></term> + <listitem> + <para>The action string.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-N</option></term> + <term><option>--resolve-names=<constant>early</constant>|<constant>late</constant>|<constant>never</constant></option></term> + <listitem> + <para>Specify when udevadm should resolve names of users + and groups. When set to <constant>early</constant> (the + default), names will be resolved when the rules are + parsed. When set to <constant>late</constant>, names will + be resolved for every event. When set to + <constant>never</constant>, names will never be resolved + and all devices will be owned by root.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect2> + + <refsect2><title>udevadm test-builtin + <arg choice="opt"><replaceable>options</replaceable></arg> + <arg><replaceable>command</replaceable></arg> + <arg><replaceable>devpath</replaceable></arg> + </title> + <para>Run a built-in command <replaceable>COMMAND</replaceable> + for device <replaceable>DEVPATH</replaceable>, and print debug + output.</para> + <variablelist> + <varlistentry> + <term><option>-h</option></term> + <term><option>--help</option></term> + <listitem> + <para>Print help text.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect2> + </refsect1> + + <refsect1> + <title>See Also</title> + <para><citerefentry> + <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum> + </citerefentry></para> + </refsect1> +</refentry> |