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420a506e | 1 | <?xml version='1.0'?> |
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2 | <?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?> |
3 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
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4 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
5 | ||
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6 | <refentry id="udevd"> |
7 | <refentryinfo> | |
3c52e8d8 | 8 | <title>udevd</title> |
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9 | <productname>udev</productname> |
10 | </refentryinfo> | |
420a506e | 11 | |
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12 | <refmeta> |
13 | <refentrytitle>udevd</refentrytitle> | |
14 | <manvolnum>8</manvolnum> | |
15 | <refmiscinfo class="version"></refmiscinfo> | |
16 | </refmeta> | |
420a506e | 17 | |
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18 | <refnamediv> |
19 | <refname>udevd</refname><refpurpose>event managing daemon</refpurpose> | |
20 | </refnamediv> | |
420a506e | 21 | |
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22 | <refsynopsisdiv> |
23 | <cmdsynopsis> | |
24 | <command>udevd</command> | |
25 | <arg><option>--daemon</option></arg> | |
63749b1a | 26 | <arg><option>--debug</option></arg> |
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27 | <arg><option>--children-max=</option></arg> |
28 | <arg><option>--exec-delay=</option></arg> | |
63749b1a | 29 | <arg><option>--resolve-names=early|late|never</option></arg> |
9fa68615 | 30 | <arg><option>--version</option></arg> |
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31 | <arg><option>--help</option></arg> |
32 | </cmdsynopsis> | |
33 | </refsynopsisdiv> | |
420a506e | 34 | |
63749b1a | 35 | <refsect1><title>Description</title> |
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36 | <para>udevd listens to kernel uevents and executes the instructions specified |
37 | in rules. On startup the content of the directory | |
38 | <filename>/lib/udev/devices</filename> is copied to <filename>/dev</filename>. | |
39 | If kernel modules specify static device nodes, these nodes are created | |
40 | even wihtout a corresponding kernel device, to allow on-demand loading of kernel | |
41 | modules. Matching permissions specified in udev rules are applied to these | |
42 | static device nodes. The behavior of the running daemon can be changed with | |
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43 | <command>udevadm control</command>.</para> |
44 | </refsect1> | |
420a506e | 45 | |
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46 | <refsect1><title>Options</title> |
47 | <variablelist> | |
48 | <varlistentry> | |
49 | <term><option>--daemon</option></term> | |
50 | <listitem> | |
51 | <para>Detach and run in the background.</para> | |
52 | </listitem> | |
53 | </varlistentry> | |
54 | <varlistentry> | |
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55 | <term><option>--debug</option></term> |
56 | <listitem> | |
57 | <para>Print debug messages to stderr.</para> | |
58 | </listitem> | |
59 | </varlistentry> | |
60 | <varlistentry> | |
61 | <term><option>--children-max=</option></term> | |
63749b1a | 62 | <listitem> |
337d1027 | 63 | <para>Limit the number of parallel executed events. |
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64 | </para> |
65 | </listitem> | |
66 | </varlistentry> | |
67 | <varlistentry> | |
9fa68615 | 68 | <term><option>--exec-delay=</option></term> |
63749b1a | 69 | <listitem> |
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70 | <para>Number of seconds to delay the execution of RUN instructions. |
71 | This might be useful when debugging system crashes during coldplug | |
72 | cause by loading non-working kernel modules.</para> | |
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73 | </listitem> |
74 | </varlistentry> | |
75 | <varlistentry> | |
9fa68615 | 76 | <term><option>--resolve-names=</option></term> |
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77 | <listitem> |
78 | <para>Specify when udevd should resolve names of users and groups. | |
79 | When set to <option>early</option> (the default) names will be | |
80 | resolved when the rules are parsed. When set to | |
81 | <option>late</option> names will be resolved for every event. | |
82 | When set to <option>never</option> names will never be resolved | |
83 | and all devices will be owned by root.</para> | |
84 | </listitem> | |
85 | </varlistentry> | |
86 | <varlistentry> | |
87 | <term><option>--version</option></term> | |
88 | <listitem> | |
89 | <para>Print version number.</para> | |
90 | </listitem> | |
91 | </varlistentry> | |
92 | <varlistentry> | |
93 | <term><option>--help</option></term> | |
94 | <listitem> | |
95 | <para>Print help text.</para> | |
96 | </listitem> | |
97 | </varlistentry> | |
98 | </variablelist> | |
99 | </refsect1> | |
420a506e | 100 | |
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101 | <refsect1><title>Environment</title> |
102 | <variablelist> | |
103 | <varlistentry> | |
104 | <term><option>UDEV_LOG</option></term> | |
105 | <listitem> | |
106 | <para>Overrides the syslog priority specified in the config file.</para> | |
107 | </listitem> | |
108 | </varlistentry> | |
109 | </variablelist> | |
110 | </refsect1> | |
7b86ada7 | 111 | |
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112 | <refsect1><title>Author</title> |
113 | <para>Written by Kay Sievers <email>kay.sievers@vrfy.org</email>.</para> | |
114 | </refsect1> | |
420a506e | 115 | |
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116 | <refsect1> |
117 | <title>See Also</title> | |
118 | <para><citerefentry> | |
119 | <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum> | |
120 | </citerefentry>, | |
121 | <citerefentry> | |
122 | <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum> | |
123 | </citerefentry></para> | |
124 | </refsect1> | |
125 | </refentry> |