1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>udev_hwdb</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="libudev Reference Manual">
<link rel="up" href="ch01.html" title="API Reference">
<link rel="prev" href="libudev-udev-queue.html" title="udev_queue">
<link rel="next" href="libudev-udev-util.html" title="udev_util">
<meta name="generator" content="GTK-Doc V1.19 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="libudev-udev-queue.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">libudev Reference Manual</th>
<td><a accesskey="n" href="libudev-udev-util.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#libudev-udev-hwdb.synopsis" class="shortcut">Top</a>
|
<a href="#libudev-udev-hwdb.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="libudev-udev-hwdb"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libudev-udev-hwdb.top_of_page"></a>udev_hwdb</span></h2>
<p>udev_hwdb — retrieve properties from the hardware database</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="libudev-udev-hwdb.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb">udev_hwdb</a>;
struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * <a class="link" href="libudev-udev-hwdb.html#udev-hwdb-ref" title="udev_hwdb_ref ()">udev_hwdb_ref</a> (<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>);
struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * <a class="link" href="libudev-udev-hwdb.html#udev-hwdb-unref" title="udev_hwdb_unref ()">udev_hwdb_unref</a> (<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>);
struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * <a class="link" href="libudev-udev-hwdb.html#udev-hwdb-new" title="udev_hwdb_new ()">udev_hwdb_new</a> (<em class="parameter"><code><span class="type">struct udev</span> *udev</code></em>);
struct <a class="link" href="libudev-udev-list.html#udev-list-entry" title="struct udev_list_entry"><span class="returnvalue">udev_list_entry</span></a> * <a class="link" href="libudev-udev-hwdb.html#udev-hwdb-get-properties-list-entry" title="udev_hwdb_get_properties_list_entry ()">udev_hwdb_get_properties_list_entry</a>
(<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *modalias</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> flags</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libudev-udev-hwdb.description"></a><h2>Description</h2>
<p>
Libudev hardware database interface.
</p>
</div>
<div class="refsect1">
<a name="libudev-udev-hwdb.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="udev-hwdb"></a><h3>struct udev_hwdb</h3>
<pre class="programlisting">struct udev_hwdb;</pre>
<p>
Opaque object representing the hardware database.
</p>
</div>
<hr>
<div class="refsect2">
<a name="udev-hwdb-ref"></a><h3>udev_hwdb_ref ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * udev_hwdb_ref (<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>);</pre>
<p>
Take a reference of a hwdb context.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>hwdb</code></em> :</span></p></td>
<td>context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the passed enumeration context</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-hwdb-unref"></a><h3>udev_hwdb_unref ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * udev_hwdb_unref (<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>);</pre>
<p>
Drop a reference of a hwdb context. If the refcount reaches zero,
all resources of the hwdb context will be released.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>hwdb</code></em> :</span></p></td>
<td>context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td><span class="type">NULL</span></td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-hwdb-new"></a><h3>udev_hwdb_new ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-hwdb.html#udev-hwdb" title="struct udev_hwdb"><span class="returnvalue">udev_hwdb</span></a> * udev_hwdb_new (<em class="parameter"><code><span class="type">struct udev</span> *udev</code></em>);</pre>
<p>
Create a hardware database context to query properties for devices.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>udev</code></em> :</span></p></td>
<td>udev library context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a hwdb context.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-hwdb-get-properties-list-entry"></a><h3>udev_hwdb_get_properties_list_entry ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-list.html#udev-list-entry" title="struct udev_list_entry"><span class="returnvalue">udev_list_entry</span></a> * udev_hwdb_get_properties_list_entry
(<em class="parameter"><code><span class="type">struct udev_hwdb</span> *hwdb</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *modalias</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> flags</code></em>);</pre>
<p>
Lookup a matching device in the hardware database. The lookup key is a
modalias string, whose formats are defined for the Linux kernel modules.
Examples are: pci:v00008086d00001C2D*, usb:v04F2pB221*. The first entry
of a list of retrieved properties is returned.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>hwdb</code></em> :</span></p></td>
<td>context</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>modalias</code></em> :</span></p></td>
<td>modalias string</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>(unused)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a udev_list_entry.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.19</div>
</body>
</html>
|
