source: BOOK/boot/common/sysvinit.xml @ d2ecc65

clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since d2ecc65 was d2ecc65, checked in by Chris Staub <chris@…>, 10 years ago

Reorganized boot section

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-boot-sysvinit" role="wrap">
9  <?dbhtml filename="sysvinit.html"?>
10
11  <title>Sysvinit-&sysvinit-version;</title>
12
13  <indexterm zone="ch-boot-sysvinit">
14    <primary sortas="a-Sysvinit">Sysvinit</primary>
15  </indexterm>
16
17  <sect2 role="package">
18    <title/>
19
20    <para>The Sysvinit package contains programs for controlling the startup,
21    running, and shutdown of the system.</para>
22
23  </sect2>
24
25  <sect2 role="installation">
26    <title>Installation of Sysvinit</title>
27
28    <para os="p1">Apply a patch to prevent installation of unneeded programs,
29    and allow Sysvinit to be installed in
30    <filename class="directory">/tools</filename>:</para>
31
32<screen os="p2"><userinput>patch -Np1 -i ../sysvinit-&sysvinit-version;-tools_updates-1.patch</userinput></screen>
33
34    <para os ="c">Compile the package:</para>
35
36<screen os="ac"><userinput>make -C src clobber
37make -C src CC="${CC}"</userinput></screen>
38
39   <para os="e">Install the package:</para>
40
41<screen os="ad"><userinput>make -C src ROOT=/tools install</userinput></screen>
42
43  </sect2>
44
45  <sect2 id="conf-tools-sysvinit" role="configuration">
46    <title>Configuring Sysvinit</title>
47
48    <indexterm zone="conf-tools-sysvinit">
49      <primary sortas="a-Sysvinit">Sysvinit</primary>
50      <secondary>boot, configuring</secondary>
51    </indexterm>
52
53    <indexterm zone="conf-tools-sysvinit">
54      <primary sortas="e-/etc/inittab">/etc/inittab</primary>
55    </indexterm>
56
57    <para>Create a new file <filename>/tools/etc/inittab</filename> by running the
58    following:</para>
59
60<screen><userinput>cat &gt; /tools/etc/inittab &lt;&lt; "EOF"
61<literal># Begin /tools/etc/inittab
62
63id:3:initdefault:
64
65si::sysinit:/tools/etc/rc.d/init.d/rc sysinit
66
67l0:0:wait:/tools/etc/rc.d/init.d/rc 0
68l1:S1:wait:/tools/etc/rc.d/init.d/rc 1
69l2:2:wait:/tools/etc/rc.d/init.d/rc 2
70l3:3:wait:/tools/etc/rc.d/init.d/rc 3
71l4:4:wait:/tools/etc/rc.d/init.d/rc 4
72l5:5:wait:/tools/etc/rc.d/init.d/rc 5
73l6:6:wait:/tools/etc/rc.d/init.d/rc 6
74
75ca:12345:ctrlaltdel:/tools/sbin/shutdown -t1 -a -r now
76
77su:S016:once:/tools/sbin/sulogin
78</literal>
79EOF</userinput></screen>
80
81    <para>The following command adds the standard virtual terminals to
82    <filename>/tools/etc/inittab</filename>. If your system only has a serial
83    console skip the following command:</para>
84
85<screen><userinput>cat &gt;&gt; /tools/etc/inittab &lt;&lt; "EOF"
86<literal>1:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty1 9600
872:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty2 9600
883:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty3 9600
894:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty4 9600
905:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty5 9600
916:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty6 9600
92</literal>
93EOF</userinput></screen>
94
95    <para>If your system has a serial console, run the following command to add
96    the entry to <filename>/tools/etc/inittab</filename>.</para>
97
98<screen><userinput>cat &gt;&gt; /tools/etc/inittab &lt;&lt; "EOF"
99<literal>c0:12345:respawn:/tools/sbin/agetty --noclear 115200 ttyS0 vt100
100</literal>
101EOF</userinput></screen>
102
103   <para>Finally, add the end line to <filename>/tools/etc/inittab</filename>.</para>
104
105<screen><userinput>cat &gt;&gt; /tools/etc/inittab &lt;&lt; "EOF"
106<literal># End /tools/etc/inittab</literal>
107EOF</userinput></screen>
108
109    <para>The <parameter>-I '\033(K'</parameter> option tells
110    <command>agetty</command> to send this escape sequence to the terminal
111    before doing anything else. This escape sequence switches the console
112    character set to a user-defined one, which can be modified by running
113    the <command>setfont</command> program. The <command>console</command>
114    initscript from the CLFS-Bootscripts package calls the
115    <command>setfont</command> program during system startup. Sending this
116    escape sequence is necessary for people who use non-ISO 8859-1 screen
117    fonts, but it does not affect native English speakers.</para>
118
119  </sect2>
120
121  <sect2 id="contents-sysvinit" role="content">
122    <title>Contents of Sysvinit</title>
123
124    <segmentedlist>
125      <segtitle>Installed programs</segtitle>
126
127      <seglistitem>
128        <seg>bootlogd, fstab-decode, halt, init, killall5,
129        poweroff (link to halt), reboot (link to halt), runlevel,
130        shutdown, and telinit (link to init)</seg>
131      </seglistitem>
132    </segmentedlist>
133
134    <variablelist>
135      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
136      <?dbfo list-presentation="list"?>
137      <?dbhtml list-presentation="table"?>
138
139      <varlistentry id="bootlogd">
140        <term><command>bootlogd</command></term>
141        <listitem>
142          <para>Logs boot messages to a log file</para>
143          <indexterm zone="ch-boot-sysvinit bootlogd">
144            <primary sortas="b-bootlogd">bootlogd</primary>
145          </indexterm>
146        </listitem>
147      </varlistentry>
148
149      <varlistentry id="fstab-decode">
150        <term><command>fstab-decode</command></term>
151        <listitem>
152          <para>Runs a command with fstab-encoded arguments</para>
153          <indexterm zone="ch-boot-sysvinit fstab-decode">
154            <primary sortas="b-fstab-decode">fstab-decode</primary>
155          </indexterm>
156        </listitem>
157      </varlistentry>
158
159      <varlistentry id="halt">
160        <term><command>halt</command></term>
161        <listitem>
162          <para>Normally invokes <command>shutdown</command> with the
163          <parameter>-h</parameter> option, except when already in run-level 0,
164          then it tells the kernel to halt the system; it notes in the
165          file <filename>/var/log/wtmp</filename> that the system is being
166          brought down</para>
167          <indexterm zone="ch-boot-sysvinit halt">
168            <primary sortas="b-halt">halt</primary>
169          </indexterm>
170        </listitem>
171      </varlistentry>
172
173      <varlistentry id="init">
174        <term><command>init</command></term>
175        <listitem>
176          <para>The first process to be started when the kernel has initialized
177          the hardware which takes over the boot process and starts all the
178          proceses it is instructed to</para>
179          <indexterm zone="ch-boot-sysvinit init">
180            <primary sortas="b-init">init</primary>
181          </indexterm>
182        </listitem>
183      </varlistentry>
184
185      <varlistentry id="killall5">
186        <term><command>killall5</command></term>
187        <listitem>
188          <para>Sends a signal to all processes, except the processes in its own
189          session so it will not kill the shell running the script that called
190          it</para>
191          <indexterm zone="ch-boot-sysvinit killall5">
192            <primary sortas="b-killall5">killall5</primary>
193          </indexterm>
194        </listitem>
195      </varlistentry>
196
197      <varlistentry id="poweroff">
198        <term><command>poweroff</command></term>
199        <listitem>
200          <para>Tells the kernel to halt the system and switch off the computer
201          (see <command>halt</command>)</para>
202          <indexterm zone="ch-boot-sysvinit poweroff">
203            <primary sortas="b-poweroff">poweroff</primary>
204          </indexterm>
205        </listitem>
206      </varlistentry>
207
208      <varlistentry id="reboot">
209        <term><command>reboot</command></term>
210        <listitem>
211          <para>Tells the kernel to reboot the system (see
212          <command>halt</command>)</para>
213          <indexterm zone="ch-boot-sysvinit reboot">
214            <primary sortas="b-reboot">reboot</primary>
215          </indexterm>
216        </listitem>
217      </varlistentry>
218
219      <varlistentry id="runlevel">
220        <term><command>runlevel</command></term>
221        <listitem>
222          <para>Reports the previous and the current run-level, as noted in
223          the last run-level record in <filename>/var/run/utmp</filename></para>
224          <indexterm zone="ch-boot-sysvinit runlevel">
225            <primary sortas="b-runlevel">runlevel</primary>
226          </indexterm>
227        </listitem>
228      </varlistentry>
229
230      <varlistentry id="shutdown">
231        <term><command>shutdown</command></term>
232        <listitem>
233          <para>Brings the system down in a secure way, signaling all processes
234          and notifying all logged-in users</para>
235          <indexterm zone="ch-boot-sysvinit shutdown">
236            <primary sortas="b-shutdown">shutdown</primary>
237          </indexterm>
238        </listitem>
239      </varlistentry>
240
241      <varlistentry id="telinit">
242        <term><command>telinit</command></term>
243        <listitem>
244          <para>Tells <command>init</command> which run-level to change to</para>
245          <indexterm zone="ch-boot-sysvinit telinit">
246            <primary sortas="b-telinit">telinit</primary>
247          </indexterm>
248        </listitem>
249      </varlistentry>
250
251    </variablelist>
252
253  </sect2>
254
255</sect1>
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