| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY hal-download-http "http://freedesktop.org/~david/dist/hal-&hal-version;.tar.gz">
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| 8 | <!-- <!ENTITY hal-download-ftp "&gentoo-ftp-repo;/hal-&hal-version;.tar.gz"> -->
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| 9 | <!ENTITY hal-download-ftp " ">
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| 10 | <!ENTITY hal-md5sum "6a40f49f964e64358e53652038f3059f">
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| 11 | <!ENTITY hal-size "1.5 MB">
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| 12 | <!ENTITY hal-buildsize "24 MB">
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| 13 | <!ENTITY hal-time "0.5 SBU">
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| 14 |
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| 15 | <!ENTITY hal-info-version "20070618">
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| 16 | <!ENTITY hal-info-download-http "http://freedesktop.org/~david/dist/hal-info-&hal-info-version;.tar.gz">
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| 17 | <!-- <!ENTITY hal-info-download-ftp "&gentoo-ftp-repo;/hal-info-&hal-info-version;.tar.gz"> -->
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| 18 | <!ENTITY hal-info-download-ftp " ">
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| 19 | <!ENTITY hal-info-md5sum "c7005ccb1765d8359fd2348350770495">
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| 20 | <!ENTITY hal-info-size "118 KB">
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| 21 | ]>
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| 22 |
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| 23 | <sect1 id="hal" xreflabel="HAL-&hal-version;">
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| 24 | <?dbhtml filename="hal.html"?>
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| 25 |
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| 26 | <sect1info>
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| 27 | <othername>$LastChangedBy$</othername>
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| 28 | <date>$Date$</date>
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| 29 | </sect1info>
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| 30 |
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| 31 | <title>HAL-&hal-version;</title>
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| 32 |
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| 33 | <indexterm zone="hal">
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| 34 | <primary sortas="a-HAL">HAL</primary>
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| 35 | </indexterm>
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| 36 |
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| 37 | <sect2 role="package">
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| 38 | <title>Introduction to HAL</title>
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| 39 |
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| 40 | <para><application>HAL</application> is a hardware abstraction layer, which
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| 41 | is a piece of software that provides a view of the various hardware
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| 42 | attached to a system. In addition to this, <application>HAL</application>
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| 43 | keeps detailed metadata for each piece of hardware and provides hooks such
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| 44 | that system and desktop-level software can react to changes in the hardware
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| 45 | configuration in order to maintain system policy.</para>
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| 46 |
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| 47 | <para>The most important goal of <application>HAL</application> is to
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| 48 | provide plug-and-play facilities for UNIX-like desktops with focus on
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| 49 | providing a rich and extensible description of device characteristics and
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| 50 | features. One example of the functionality provided by
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| 51 | <application>HAL</application> is when you plug in a USB storage device.
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| 52 | <application>HAL</application> can automatically create a mount point in
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| 53 | <filename class="directory">/media</filename> and mount the device.</para>
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| 54 |
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| 55 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 56 | <itemizedlist spacing="compact">
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| 57 | <listitem>
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| 58 | <para>Download (HTTP): <ulink url="&hal-download-http;"/></para>
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| 59 | </listitem>
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| 60 | <listitem>
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| 61 | <para>Download (FTP): <ulink url="&hal-download-ftp;"/></para>
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| 62 | </listitem>
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| 63 | <listitem>
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| 64 | <para>Download MD5 sum: &hal-md5sum;</para>
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| 65 | </listitem>
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| 66 | <listitem>
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| 67 | <para>Download size: &hal-size;</para>
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| 68 | </listitem>
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| 69 | <listitem>
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| 70 | <para>Estimated disk space required: &hal-buildsize;</para>
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| 71 | </listitem>
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| 72 | <listitem>
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| 73 | <para>Estimated build time: &hal-time;</para>
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| 74 | </listitem>
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| 75 | </itemizedlist>
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| 76 |
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| 77 | <bridgehead renderas="sect3">Additional Package Download</bridgehead>
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| 78 | <itemizedlist spacing='compact'>
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| 79 | <title>Required Hardware Data</title>
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| 80 | <listitem>
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| 81 | <para>Download (HTTP): <ulink url="&hal-info-download-http;"/></para>
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| 82 | </listitem>
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| 83 | <listitem>
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| 84 | <para>Download (FTP): <ulink url="&hal-info-download-ftp;"/></para>
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| 85 | </listitem>
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| 86 | <listitem>
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| 87 | <para>Download MD5 sum: &hal-info-md5sum;</para>
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| 88 | </listitem>
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| 89 | <listitem>
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| 90 | <para>Download size: &hal-info-size;</para>
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| 91 | </listitem>
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| 92 | </itemizedlist>
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| 93 |
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| 94 | <bridgehead renderas="sect3">HAL Dependencies</bridgehead>
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| 95 |
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| 96 | <bridgehead renderas="sect4">Required</bridgehead>
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| 97 | <para role="required"><xref linkend="dbus-glib"/> and
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| 98 | <xref linkend="perl-xml-parser"/></para>
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| 99 |
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| 100 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 101 | <para role="recommended"><xref linkend="pciutils"/>
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| 102 | (with a current <filename>pci.ids</filename> file) and
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| 103 | <xref linkend="usbutils"/>
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| 104 | (with a current <filename>usb.ids</filename> file)</para>
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| 105 |
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| 106 | <bridgehead renderas="sect4">Optional (to Build
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| 107 | <command>hal-device-manager</command>)</bridgehead>
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| 108 | <para role="optional"><xref linkend="python"/></para>
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| 109 |
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| 110 | <bridgehead renderas="sect4">Optional (to Create Documentation)</bridgehead>
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| 111 | <para role="optional"><xref linkend="libxml2"/> and
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| 112 | <ulink url="http://cyberelk.net/tim/xmlto/">xmlto</ulink></para>
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| 113 |
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| 114 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 115 | <para role="optional"><xref linkend="gtk-doc"/>,
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| 116 | <ulink url="http://www.gnu.org/software/parted/index.shtml">Parted</ulink>*,
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| 117 | <ulink url="http://linux.dell.com/libsmbios/main/index.html">libsmbios</ulink>,
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| 118 | <ulink url="http://gitweb.freedesktop.org/?p=PolicyKit.git;a=summary">PolicyKit</ulink>,
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| 119 | and <xref linkend="intltool"/></para>
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| 120 |
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| 121 | <para>* Use the following command after changing into the
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| 122 | <application>HAL</application> source directory to modify the package
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| 123 | <command>configure</command> script if you have
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| 124 | <application>Parted</application> version 1.8.7 installed.</para>
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| 125 |
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| 126 | <screen><userinput>sed -i -e 's%, 1.8.6%&, 1.8.7%' \
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| 127 | -e 's% or 1.8.6%/1.8.6 or 1.8.7%' \
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| 128 | -e 's%6))%6) ||\
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| 129 | (major == 1 \&\& minor == 8 \&\& micro == 7))%' \
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| 130 | configure</userinput></screen>
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| 131 |
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| 132 | <para condition="html" role="usernotes">User Notes:
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| 133 | <ulink url="&blfs-wiki;/hal"/></para>
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| 134 |
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| 135 | </sect2>
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| 136 |
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| 137 | <sect2 role="installation">
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| 138 | <title>Installation of HAL</title>
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| 139 |
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| 140 | <para>You must create a dedicated user and group before installing the
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| 141 | package. Though the default BLFS instructions run the
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| 142 | <application>HAL</application> daemon as the
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| 143 | <systemitem class="username">root</systemitem> user, a configuration file
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| 144 | is installed which has the dedicated user's name hard-coded in it. This
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| 145 | causes a confusing message to be generated when starting the
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| 146 | <application>D-BUS</application> daemon. Issue the following commands as
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| 147 | the <systemitem class="username">root</systemitem> user:</para>
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| 148 |
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| 149 | <screen role="root"><userinput>groupadd -g 19 haldaemon &&
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| 150 | useradd -c "HAL Daemon User" -d /dev/null -u 19 \
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| 151 | -g haldaemon -s /bin/false haldaemon</userinput></screen>
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| 152 |
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| 153 | <para>Install <application>HAL</application> by running the following
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| 154 | commands:</para>
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| 155 |
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| 156 | <screen><userinput>./configure --prefix=/usr \
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| 157 | --sysconfdir=/etc \
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| 158 | --libexecdir=/usr/lib/hal \
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| 159 | --localstatedir=/var &&
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| 160 | make</userinput></screen>
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| 161 |
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| 162 | <para>To test the results, issue <command>make check</command>.</para>
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| 163 |
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| 164 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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| 165 |
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| 166 | <screen role="root"><userinput>make install</userinput></screen>
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| 167 |
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| 168 | <para>Install the <application>HAL</application> hardware data with the
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| 169 | following commands:</para>
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| 170 |
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| 171 | <screen><userinput>tar -xf ../hal-info-&hal-info-version;.tar.gz &&
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| 172 | cd hal-info-&hal-info-version; &&
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| 173 | ./configure --prefix=/usr</userinput></screen>
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| 174 |
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| 175 | <para>Finally, as the <systemitem class="username">root</systemitem> user:</para>
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| 176 |
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| 177 | <screen role="root"><userinput>make install</userinput></screen>
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| 178 |
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| 179 | </sect2>
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| 180 |
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| 181 | <sect2 role="commands">
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| 182 | <title>Command Explanations</title>
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| 183 |
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| 184 | <para><parameter>--libexecdir=/usr/lib/hal</parameter>: This parameter
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| 185 | forces the installation of libexec files to
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| 186 | <filename class='directory'>/usr/lib/hal</filename> instead of
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| 187 | <filename class='directory'>/usr/libexec</filename>.</para>
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| 188 |
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| 189 | <para><parameter>--localstatedir=/var</parameter>: This parameter forces
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| 190 | the creation of the <filename>pid</filename> file to
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| 191 | <filename class='directory'>/var/run/hald</filename> instead of
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| 192 | <filename class='directory'>/usr/var/run/hald</filename>.</para>
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| 193 |
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| 194 | <para><parameter>--enable-docbook-docs
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| 195 | --docdir=/usr/share/doc/hal-&hal-version;</parameter>: If <xref
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| 196 | linkend="libxml2"/> and <ulink
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| 197 | url="http://cyberelk.net/tim/xmlto/">xmlto</ulink> are available, these
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| 198 | parameters enable the <application>HAL</application> specification
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| 199 | documentation to be built.</para>
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| 200 |
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| 201 | </sect2>
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| 202 |
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| 203 | <sect2>
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| 204 | <title>Run-Time Dependencies</title>
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| 205 |
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| 206 | <para>A few more packages enable more functionality in
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| 207 | <application>HAL</application> at run-time. These include <ulink
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| 208 | url="http://ca.geocities.com/jefftranter@rogers.com/eject.html">Eject</ulink>,
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| 209 | <ulink url="http://people.freedesktop.org/~mccann/dist/">ConsoleKit</ulink>,
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| 210 | <ulink url="http://www.nongnu.org/dmidecode/">dmidecode</ulink>,
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| 211 | <ulink url="http://sourceware.org/dm/">Device-mapper</ulink>,
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| 212 | <ulink url="http://luks.endorphin.org/dm-crypt">Cryptsetup-LUKS</ulink>, and
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| 213 | <ulink url="http://pm-utils.freedesktop.org/wiki/">pm-utils</ulink>.</para>
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| 214 |
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| 215 | <para>The <xref linkend="hal-device-manager"/> program requires several
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| 216 | additional <application>Python</application> modules to be available at
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| 217 | runtime. These are <xref linkend="dbus-python"/>,
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| 218 | <xref linkend="pygtk"/> (including the gtk and gtk.libglade modules), and
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| 219 | <xref linkend="gnome-python"/> (including the gnome.ui module).</para>
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| 220 |
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| 221 | </sect2>
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| 222 |
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| 223 | <sect2 role="configuration">
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| 224 | <title>Configuring HAL</title>
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| 225 |
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| 226 | <sect3 id="hal-config">
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| 227 | <title>Config Files</title>
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| 228 | <para><filename>/etc/dbus-1/system.d/hal.conf</filename>,
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| 229 | <filename>/etc/dbus-1/system.d/halusers.conf</filename> and
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| 230 | <filename>/etc/hal/*</filename></para>
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| 231 |
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| 232 | <indexterm zone="hal hal-config">
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| 233 | <primary sortas="e-etc-dbus-1-system.d-hal.conf">/etc/dbus-1/system.d/hal.conf</primary>
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| 234 | </indexterm>
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| 235 |
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| 236 | <indexterm zone="hal hal-config">
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| 237 | <primary sortas="e-etc-dbus-1-system.d-halusers.conf">/etc/dbus-1/system.d/halusers.conf</primary>
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| 238 | </indexterm>
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| 239 |
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| 240 | <indexterm zone="hal hal-config">
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| 241 | <primary sortas="e-etc-hal-star">/etc/hal/*</primary>
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| 242 | </indexterm>
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| 243 | </sect3>
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| 244 |
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| 245 | <sect3><title>Configuration Information</title>
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| 246 | <sect4><title>Allowing users to invoke HAL methods</title>
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| 247 |
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| 248 | <para>The default setup for <application>HAL</application> is to allow
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| 249 | only certain users to invoke methods such as Mount(). These are
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| 250 | the <systemitem class="username">root</systemitem> user and the user
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| 251 | determined to be at the active console using <ulink
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| 252 | url="&blfs-wiki;/linux-pam">pam_console</ulink>. If you are not set
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| 253 | up to use <xref linkend="linux-pam"/> and <ulink
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| 254 | url="&blfs-wiki;/linux-pam">pam_console</ulink>, create a group that
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| 255 | is allowed to invoke <application>HAL</application> methods with the
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| 256 | following commands:</para>
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| 257 |
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| 258 | <screen role="root"><userinput>groupadd -g 61 halusers &&
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| 259 | cat > /etc/dbus-1/system.d/halusers.conf << "EOF"
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| 260 | <literal><!DOCTYPE busconfig PUBLIC
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| 261 | "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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| 262 | "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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| 263 | <busconfig>
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| 264 |
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| 265 | <!-- Allow users in the halusers group invoke HAL methods -->
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| 266 | <policy group="halusers">
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| 267 | <allow send_interface="org.freedesktop.Hal.Device.SystemPowerManagement"/>
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| 268 | <allow send_interface="org.freedesktop.Hal.Device.LaptopPanel"/>
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| 269 | <allow send_interface="org.freedesktop.Hal.Device.Volume"/>
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| 270 | <allow send_interface="org.freedesktop.Hal.Device.Volume.Crypto"/>
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| 271 | </policy>
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| 272 |
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| 273 | </busconfig></literal>
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| 274 | EOF</userinput></screen>
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| 275 |
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| 276 | <para>Now add the users you would like to the <systemitem
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| 277 | class="groupname">halusers</systemitem> group to use
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| 278 | <application>HAL</application>.</para>
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| 279 |
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| 280 | <screen role="root"><userinput>usermod -a -G halusers <replaceable><username></replaceable></userinput></screen>
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| 281 |
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| 282 | <para>Note that these users still need
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| 283 | to have appropriate permissions to access the devices that
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| 284 | <application>HAL</application> will invoke its methods on.</para>
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| 285 |
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| 286 | <para>With the above configuration in place, authorized users now
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| 287 | have the ability to unmount disk partitions mounted at non-standard
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| 288 | locations such as <filename class='directory'>/pub</filename>. If
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| 289 | you'd like to restrict this policy to only drives which are considered
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| 290 | removable or hotpluggable, add the following configuration file as
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| 291 | the <systemitem class='username'>root</systemitem> user:</para>
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| 292 |
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| 293 | <screen role="root"><userinput>cat > /etc/hal/fdi/policy/no-fixed-drives.fdi << "EOF"
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| 294 | <literal><?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- -->
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| 295 |
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| 296 | <!-- Don't allow HAL methods on disks that are not
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| 297 | removable or hotpluggable -->
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| 298 |
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| 299 | <deviceinfo version="0.2">
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| 300 | <device>
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| 301 | <match key="@block.storage_device:storage.hotpluggable" bool="false">
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| 302 | <match key="@block.storage_device:storage.removable" bool="false">
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| 303 | <merge key="volume.ignore" type="bool">true</merge>
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| 304 | </match>
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| 305 | </match>
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| 306 | </device>
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| 307 | </deviceinfo></literal>
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| 308 | EOF</userinput></screen>
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| 309 | </sect4>
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| 310 |
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| 311 | <sect4><title>Installing mount helpers</title>
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| 312 | <para><application>HAL</application> only provides the methods such
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| 313 | as Mount() to act on hardware. In order to take advantage of these,
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| 314 | a <application>HAL</application> event handler such as
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| 315 | <xref linkend="gnome-volume-manager"/> or <ulink
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| 316 | url="http://ivman.sourceforge.net/">Ivman</ulink> should be
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| 317 | installed.</para>
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| 318 | <!-- FIXME: is Ivman still alive? -->
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| 319 | <!-- FIXME: explicitly name the mount helpers
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| 320 | from KDE (???) and Xfce (exo-mount) -->
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| 321 | </sect4>
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| 322 |
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| 323 | <sect4><title>Changing default mount options</title>
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| 324 | <para>In some cases, it is necessary to specify some default mount
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| 325 | options for filesystems. E.g., in non-English environments, the
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| 326 | <option>iocharset</option> and <option>codepage</option> options
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| 327 | are needed for filesystems of Windows origin in order to show
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| 328 | national characters correctly. Also, due to a
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| 329 | <ulink url="https://launchpad.net/bugs/133567">bug</ulink> in the
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| 330 | Linux kernel version in LFS (2.6.22.x), you may want to pass the
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| 331 | <option>usefree</option> option to vfat filesystems in order to reduce
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| 332 | the time needed to determine the amount of free space on the
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| 333 | filesystem.</para>
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| 334 |
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| 335 | <para>Google search results for <quote>hal default mount options</quote>
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| 336 | are still full of recommendations to create <filename>*.fdi</filename>
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| 337 | files mentioning either
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| 338 | <option>volume.policy</option> or <option>storage.policy</option> keys.
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| 339 | Such recommendations worked for HAL-0.4.x only and are invalid now.
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| 340 | For HAL-&hal-version;, mount options are expected to be handled
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| 341 | as follows:</para>
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| 342 |
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| 343 | <itemizedlist>
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| 344 | <listitem>
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| 345 | <para>An event handler from the desktop environment receives an
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| 346 | event describing the newly-added storage device.</para>
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| 347 | </listitem>
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| 348 | <listitem>
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| 349 | <para>If the storage device is not already mentioned in
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| 350 | <filename>/etc/fstab</filename>, mount options are fetched from
|
|---|
| 351 | a database of user preferences, which is specific to the desktop
|
|---|
| 352 | environment, and passed back to HAL.
|
|---|
| 353 | This process can be influenced by the filesystem type
|
|---|
| 354 | and possibly other volume properties available from HAL.</para>
|
|---|
| 355 | </listitem>
|
|---|
| 356 | <listitem>
|
|---|
| 357 | <para>If the options are in the list of permitted ones, HAL
|
|---|
| 358 | mounts the volume.</para>
|
|---|
| 359 | </listitem>
|
|---|
| 360 | </itemizedlist>
|
|---|
| 361 |
|
|---|
| 362 | <para>The important point above is that the configuration procedure is
|
|---|
| 363 | desktop-specific. However, as of December, 2007, only GNOME allows the
|
|---|
| 364 | user to set default mount options on a per-filesystem basis,
|
|---|
| 365 | as described in the next paragraph.
|
|---|
| 366 | KDE allows the mount options to be set only on a per-volume basis,
|
|---|
| 367 | not per-filesystem, which is a
|
|---|
| 368 | <ulink url="http://bugs.kde.org/show_bug.cgi?id=133456">bug</ulink>,
|
|---|
| 369 | because, as mentioned in the report, <quote>for every new device (let's
|
|---|
| 370 | say your friend's USB stick) you have to first not mount it, then change
|
|---|
| 371 | options and then mount</quote>. Xfce, if compiled with HAL support,
|
|---|
| 372 | <ulink url="http://bugzilla.xfce.org/show_bug.cgi?id=2891">hard-codes</ulink>
|
|---|
| 373 | the mount options without any means to override them,
|
|---|
| 374 | which is even worse.
|
|---|
| 375 | <!-- (for BLFS editors only: they mention policy-kit as a future
|
|---|
| 376 | solution, but, from the description, policy-kit looks like
|
|---|
| 377 | an XML-ized sudo-like configuration parser, which has nothing
|
|---|
| 378 | common with the "default mount options" problem. -->
|
|---|
| 379 | In KDE and Xfce, if the built-in default mount options are not suitable,
|
|---|
| 380 | it is needed to mention every possible removable storage device in
|
|---|
| 381 | <filename>/etc/fstab</filename> with the correct options, thus mostly
|
|---|
| 382 | defeating the point of installing HAL.</para>
|
|---|
| 383 |
|
|---|
| 384 | <para>In order to adjust the default mount options, GNOME users should
|
|---|
| 385 | change the
|
|---|
| 386 | <systemitem>/system/storage/default_options/[fs_type]/mount_options</systemitem>
|
|---|
| 387 | GConf key either using <xref linkend="gconf-editor"/>, or from the
|
|---|
| 388 | command line, as demonstrated in the following example:</para>
|
|---|
| 389 |
|
|---|
| 390 | <screen><userinput>gconftool-2 --type list --list-type=string \
|
|---|
| 391 | --set /system/storage/default_options/vfat/mount_options \
|
|---|
| 392 | "[shortname=mixed,uid=,usefree,iocharset=koi8-r,codepage=866]"</userinput></screen>
|
|---|
| 393 |
|
|---|
| 394 | <para>See more details in the gnome-mount(1) manual page.</para>
|
|---|
| 395 | </sect4>
|
|---|
| 396 |
|
|---|
| 397 | <sect4><title>Adding allowed mount options</title>
|
|---|
| 398 | <para>The list of mount options permitted in the default HAL
|
|---|
| 399 | configuration resides in the
|
|---|
| 400 | <filename>/usr/share/hal/fdi/policy/10osvendor/20-storage-methods.fdi</filename>
|
|---|
| 401 | file. GNOME and KDE users may want to use options not in this
|
|---|
| 402 | list (in the above example, this applies to the <option>usefree</option>
|
|---|
| 403 | option). In this case, as <systemitem class="username">root</systemitem>
|
|---|
| 404 | user, create a custom policy file that mentions unknown mount
|
|---|
| 405 | options:</para>
|
|---|
| 406 |
|
|---|
| 407 | <screen role="root"><userinput>cat > /etc/hal/fdi/policy/user-options.fdi << "EOF"
|
|---|
| 408 | <literal><?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- -->
|
|---|
| 409 |
|
|---|
| 410 | <!--
|
|---|
| 411 | This file is used to set custom options to the HAL policy settings.
|
|---|
| 412 | The default policy settings are defined in files contained in the
|
|---|
| 413 | /usr/share/hal/fdi/policy subdirectories. User defined customizations
|
|---|
| 414 | should be in files contained in the /etc/hal/fdi/policy directory.
|
|---|
| 415 | -->
|
|---|
| 416 |
|
|---|
| 417 | <deviceinfo version="0.2">
|
|---|
| 418 | <device>
|
|---|
| 419 |
|
|---|
| 420 | <!-- this is to be able to mount media in drives we cannot poll,
|
|---|
| 421 | e.g. IDE Zip Drives and PC style floppy drives -->
|
|---|
| 422 | <match key="storage.media_check_enabled" bool="false">
|
|---|
| 423 | <match key="storage.no_partitions_hint" bool="true">
|
|---|
| 424 | <append key="volume.mount.valid_options" type="strlist">usefree</append>
|
|---|
| 425 | <!-- Insert other options here -->
|
|---|
| 426 | </match>
|
|---|
| 427 | </match>
|
|---|
| 428 |
|
|---|
| 429 | <match key="volume.fsusage" string="filesystem">
|
|---|
| 430 |
|
|---|
| 431 | <!-- allow these mount options for vfat -->
|
|---|
| 432 | <match key="volume.fstype" string="vfat">
|
|---|
| 433 | <append key="volume.mount.valid_options" type="strlist">usefree</append>
|
|---|
| 434 | <!-- Insert other options here -->
|
|---|
| 435 | </match>
|
|---|
| 436 | </match>
|
|---|
| 437 |
|
|---|
| 438 | </device>
|
|---|
| 439 | </deviceinfo></literal>
|
|---|
| 440 | EOF</userinput></screen>
|
|---|
| 441 |
|
|---|
| 442 | </sect4>
|
|---|
| 443 | </sect3>
|
|---|
| 444 |
|
|---|
| 445 | <sect3 id="hal-init">
|
|---|
| 446 | <title>Boot Script</title>
|
|---|
| 447 |
|
|---|
| 448 | <para>To automatically start the <command>hald</command> daemon
|
|---|
| 449 | when the system is rebooted, install the
|
|---|
| 450 | <filename>/etc/rc.d/init.d/haldaemon</filename>
|
|---|
| 451 | bootscript from the
|
|---|
| 452 | <xref linkend="bootscripts"/> package.</para>
|
|---|
| 453 |
|
|---|
| 454 | <indexterm zone="hal hal-init">
|
|---|
| 455 | <primary sortas="f-haldaemon">haldaemon</primary>
|
|---|
| 456 | </indexterm>
|
|---|
| 457 |
|
|---|
| 458 | <!-- Not sure if this is still required any longer as the HAL daemon
|
|---|
| 459 | used to hang if you didn't first restart the DBUS daemon. This is
|
|---|
| 460 | not the case any longer, but it still seems that D-Bus should be
|
|---|
| 461 | restarted, as the hald.conf file is read by the D-BUS daemon.
|
|---|
| 462 | Leaving it in for now until it is positively confirmed it is not
|
|---|
| 463 | required. -->
|
|---|
| 464 |
|
|---|
| 465 | <important>
|
|---|
| 466 | <para>If the system-wide <application>D-BUS</application> daemon was
|
|---|
| 467 | running during the installation of <application>HAL</application>,
|
|---|
| 468 | ensure you stop and restart the <application>D-BUS</application>
|
|---|
| 469 | daemon before attempting to start the <command>hald</command>
|
|---|
| 470 | daemon.</para>
|
|---|
| 471 | </important>
|
|---|
| 472 |
|
|---|
| 473 | <screen role="root"><userinput>make install-haldaemon</userinput></screen>
|
|---|
| 474 |
|
|---|
| 475 | </sect3>
|
|---|
| 476 |
|
|---|
| 477 | </sect2>
|
|---|
| 478 |
|
|---|
| 479 | <sect2 role="content">
|
|---|
| 480 | <title>Contents</title>
|
|---|
| 481 |
|
|---|
| 482 | <segmentedlist>
|
|---|
| 483 | <segtitle>Installed Programs</segtitle>
|
|---|
| 484 | <segtitle>Installed Libraries</segtitle>
|
|---|
| 485 | <segtitle>Installed Directories</segtitle>
|
|---|
| 486 |
|
|---|
| 487 | <seglistitem>
|
|---|
| 488 | <seg>hal-device, hal-device-manager, hal-disable-polling,
|
|---|
| 489 | hal-find-by-capability, hal-find-by-property, hal-get-property,
|
|---|
| 490 | hal-is-caller-locked-out, hal-lock, hal-set-property, hald and
|
|---|
| 491 | lshal</seg>
|
|---|
| 492 | <seg>libhal.{so,a} and libhal-storage,{so,a}</seg>
|
|---|
| 493 | <seg>/etc/hal, /usr/include/hal, /usr/lib/hal,
|
|---|
| 494 | /usr/share/doc/hal-&hal-version;, /usr/share/hal, /var/cache/hald,
|
|---|
| 495 | /var/lib/hal, and /var/run/hald</seg>
|
|---|
| 496 | </seglistitem>
|
|---|
| 497 | </segmentedlist>
|
|---|
| 498 |
|
|---|
| 499 | <variablelist>
|
|---|
| 500 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
|---|
| 501 | <?dbfo list-presentation="list"?>
|
|---|
| 502 | <?dbhtml list-presentation="table"?>
|
|---|
| 503 |
|
|---|
| 504 | <varlistentry id="hal-device">
|
|---|
| 505 | <term><command>hal-device</command></term>
|
|---|
| 506 | <listitem>
|
|---|
| 507 | <para>is used to create, remove or show a
|
|---|
| 508 | <application>HAL</application> device.</para>
|
|---|
| 509 | <indexterm zone="hal hal-device">
|
|---|
| 510 | <primary sortas="b-hal-device">hal-device</primary>
|
|---|
| 511 | </indexterm>
|
|---|
| 512 | </listitem>
|
|---|
| 513 | </varlistentry>
|
|---|
| 514 |
|
|---|
| 515 | <varlistentry id="hal-device-manager">
|
|---|
| 516 | <term><command>hal-device-manager</command></term>
|
|---|
| 517 | <listitem>
|
|---|
| 518 | <para>shows a graphical representation of all the devices
|
|---|
| 519 | <application>HAL</application> is aware of. Here is a <ulink
|
|---|
| 520 | url="http://cvs.freedesktop.org/*checkout*/hal/hal/doc/spec/hal-devices1.png">
|
|---|
| 521 | screenshot</ulink> of <command>hal-device-manager</command>
|
|---|
| 522 | communicating with the HAL daemon and displaying a tree of device
|
|---|
| 523 | objects. The shown properties in the screenshot are for a device
|
|---|
| 524 | object representing a hard disk.</para>
|
|---|
| 525 | <indexterm zone="hal hal-device-manager">
|
|---|
| 526 | <primary sortas="b-hal-device-manager">hal-device-manager</primary>
|
|---|
| 527 | </indexterm>
|
|---|
| 528 | </listitem>
|
|---|
| 529 | </varlistentry>
|
|---|
| 530 |
|
|---|
| 531 | <varlistentry id="hal-disable-polling">
|
|---|
| 532 | <term><command>hal-disable-polling</command></term>
|
|---|
| 533 | <listitem>
|
|---|
| 534 | <para>can be used to to disable and enable media detection on
|
|---|
| 535 | drives with removable storage.</para>
|
|---|
| 536 | <indexterm zone="hal hal-disable-polling">
|
|---|
| 537 | <primary sortas="b-hal-disable-polling">hal-disable-polling</primary>
|
|---|
| 538 | </indexterm>
|
|---|
| 539 | </listitem>
|
|---|
| 540 | </varlistentry>
|
|---|
| 541 |
|
|---|
| 542 | <varlistentry id="hal-find-by-capability">
|
|---|
| 543 | <term><command>hal-find-by-capability</command></term>
|
|---|
| 544 | <listitem>
|
|---|
| 545 | <para>prints the Unique Device Identifiers for
|
|---|
| 546 | <application>HAL</application> device objects of a given
|
|---|
| 547 | capability.</para>
|
|---|
| 548 | <indexterm zone="hal hal-find-by-capability">
|
|---|
| 549 | <primary sortas="b-hal-find-by-capability">hal-find-by-capability</primary>
|
|---|
| 550 | </indexterm>
|
|---|
| 551 | </listitem>
|
|---|
| 552 | </varlistentry>
|
|---|
| 553 |
|
|---|
| 554 | <varlistentry id="hal-find-by-property">
|
|---|
| 555 | <term><command>hal-find-by-property</command></term>
|
|---|
| 556 | <listitem>
|
|---|
| 557 | <para>prints the Unique Device Identifiers for
|
|---|
| 558 | <application>HAL</application> device objects where a given property
|
|---|
| 559 | assumes a given value.</para>
|
|---|
| 560 | <indexterm zone="hal hal-find-by-property">
|
|---|
| 561 | <primary sortas="b-hal-find-by-property">hal-find-by-property</primary>
|
|---|
| 562 | </indexterm>
|
|---|
| 563 | </listitem>
|
|---|
| 564 | </varlistentry>
|
|---|
| 565 |
|
|---|
| 566 | <varlistentry id="hal-get-property">
|
|---|
| 567 | <term><command>hal-get-property</command></term>
|
|---|
| 568 | <listitem>
|
|---|
| 569 | <para>retrieves a property from a device.</para>
|
|---|
| 570 | <indexterm zone="hal hal-get-property">
|
|---|
| 571 | <primary sortas="b-hal-get-property">hal-get-property</primary>
|
|---|
| 572 | </indexterm>
|
|---|
| 573 | </listitem>
|
|---|
| 574 | </varlistentry>
|
|---|
| 575 |
|
|---|
| 576 | <varlistentry id="hal-set-property">
|
|---|
| 577 | <term><command>hal-set-property</command></term>
|
|---|
| 578 | <listitem>
|
|---|
| 579 | <para>attempts to set property for a device. Note that, due to
|
|---|
| 580 | security considerations, it may not be possible to set a
|
|---|
| 581 | property.</para>
|
|---|
| 582 | <indexterm zone="hal hal-set-property">
|
|---|
| 583 | <primary sortas="b-hal-set-property">hal-set-property</primary>
|
|---|
| 584 | </indexterm>
|
|---|
| 585 | </listitem>
|
|---|
| 586 | </varlistentry>
|
|---|
| 587 |
|
|---|
| 588 | <varlistentry id="hal-is-caller-locked-out">
|
|---|
| 589 | <term><command>hal-is-caller-locked-out</command></term>
|
|---|
| 590 | <listitem>
|
|---|
| 591 | <para>determines if a specific caller is locked out of a specific
|
|---|
| 592 | <application>D-Bus</application> interface on a specific device.</para>
|
|---|
| 593 | <indexterm zone="hal hal-is-caller-locked-out">
|
|---|
| 594 | <primary sortas="b-hal-is-caller-locked-out">hal-is-caller-locked-out</primary>
|
|---|
| 595 | </indexterm>
|
|---|
| 596 | </listitem>
|
|---|
| 597 | </varlistentry>
|
|---|
| 598 |
|
|---|
| 599 | <varlistentry id="hald">
|
|---|
| 600 | <term><command>hald</command></term>
|
|---|
| 601 | <listitem>
|
|---|
| 602 | <para>is the <application>HAL</application> daemon program.</para>
|
|---|
| 603 | <indexterm zone="hal hald">
|
|---|
| 604 | <primary sortas="b-hald">hald</primary>
|
|---|
| 605 | </indexterm>
|
|---|
| 606 | </listitem>
|
|---|
| 607 | </varlistentry>
|
|---|
| 608 |
|
|---|
| 609 | <varlistentry id="lshal">
|
|---|
| 610 | <term><command>lshal</command></term>
|
|---|
| 611 | <listitem>
|
|---|
| 612 | <para>shows all devices and their properties. If the --monitor option
|
|---|
| 613 | is given then the device list and all devices are monitored for
|
|---|
| 614 | changes.</para>
|
|---|
| 615 | <indexterm zone="hal lshal">
|
|---|
| 616 | <primary sortas="b-lshal">lshal</primary>
|
|---|
| 617 | </indexterm>
|
|---|
| 618 | </listitem>
|
|---|
| 619 | </varlistentry>
|
|---|
| 620 |
|
|---|
| 621 | <varlistentry id="libhal">
|
|---|
| 622 | <term><filename class='libraryfile'>libhal.{so,a}</filename></term>
|
|---|
| 623 | <listitem>
|
|---|
| 624 | <para>contains the API functions required by the
|
|---|
| 625 | <application>HAL</application> programs.</para>
|
|---|
| 626 | <indexterm zone="hal libhal">
|
|---|
| 627 | <primary sortas="c-libhal">libhal.{so,a}</primary>
|
|---|
| 628 | </indexterm>
|
|---|
| 629 | </listitem>
|
|---|
| 630 | </varlistentry>
|
|---|
| 631 |
|
|---|
| 632 | <varlistentry id="libhal-storage">
|
|---|
| 633 | <term><filename class='libraryfile'>libhal-storage.{so,a}</filename></term>
|
|---|
| 634 | <listitem>
|
|---|
| 635 | <para>contains the API functions required by the
|
|---|
| 636 | <application>HAL</application> storage and volume utility
|
|---|
| 637 | programs.</para>
|
|---|
| 638 | <indexterm zone="hal libhal-storage">
|
|---|
| 639 | <primary sortas="c-libhal-storage">libhal-storage.{so,a}</primary>
|
|---|
| 640 | </indexterm>
|
|---|
| 641 | </listitem>
|
|---|
| 642 | </varlistentry>
|
|---|
| 643 |
|
|---|
| 644 | </variablelist>
|
|---|
| 645 |
|
|---|
| 646 | </sect2>
|
|---|
| 647 |
|
|---|
| 648 | </sect1>
|
|---|
