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-scripts-network"> |
---|
9 | <?dbhtml filename="network.html"?> |
---|
10 | |
---|
11 | <title>Configuring the network Script</title> |
---|
12 | |
---|
13 | <indexterm zone="ch-scripts-network"> |
---|
14 | <primary sortas="d-network">network</primary> |
---|
15 | <secondary>configuring</secondary></indexterm> |
---|
16 | |
---|
17 | <sect2> |
---|
18 | <title>Creating Network Interface Configuration Files</title> |
---|
19 | |
---|
20 | <para>Which interfaces are brought up and down by the network utilities |
---|
21 | depends on the files and directories in the |
---|
22 | <filename class="directory">/etc/network</filename> directory. The |
---|
23 | <filename>interfaces</filename> file should contain a |
---|
24 | description of the interfaces, as done by Debian, and each of the |
---|
25 | directories contain scripts for actions to perform on each type of network |
---|
26 | event.</para> |
---|
27 | |
---|
28 | <para>The following command creates the required directories and the |
---|
29 | <filename>interfaces</filename> file, assuming DHCP will be used for |
---|
30 | eth0:</para> |
---|
31 | |
---|
32 | <screen><userinput>mkdir -pv ${CLFS}/targetfs/etc/network/if-{post-{up,down},pre-{up,down},up,down}.d |
---|
33 | mkdir -pv ${CLFS}/targetfs/usr/share/udhcpc |
---|
34 | |
---|
35 | cat > ${CLFS}/targetfs/etc/network/interfaces << "EOF" |
---|
36 | <literal>auto eth0 |
---|
37 | iface eth0 inet dhcp</literal> |
---|
38 | EOF</userinput></screen> |
---|
39 | |
---|
40 | <para>For DHCP to work properly with udhcpc, the BusyBox dhcp client, a |
---|
41 | configuration script is needed. Create a simple script to assign the |
---|
42 | provided DHCP address and update <filename>/etc/resolv.conf</filename>:</para> |
---|
43 | |
---|
44 | <screen><userinput>cat > ${CLFS}/targetfs/usr/share/udhcpc/default.script << "EOF" |
---|
45 | <literal>#!/bin/sh |
---|
46 | # udhcpc Interface Configuration |
---|
47 | # Based on http://lists.debian.org/debian-boot/2002/11/msg00500.html |
---|
48 | # udhcpc script edited by Tim Riker <Tim@Rikers.org> |
---|
49 | |
---|
50 | [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1 |
---|
51 | |
---|
52 | RESOLV_CONF="/etc/resolv.conf" |
---|
53 | [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast" |
---|
54 | [ -n "$subnet" ] && NETMASK="netmask $subnet" |
---|
55 | |
---|
56 | case "$1" in |
---|
57 | deconfig) |
---|
58 | /sbin/ifconfig $interface 0.0.0.0 |
---|
59 | ;; |
---|
60 | |
---|
61 | renew|bound) |
---|
62 | /sbin/ifconfig $interface $ip $BROADCAST $NETMASK |
---|
63 | |
---|
64 | if [ -n "$router" ] ; then |
---|
65 | while route del default gw 0.0.0.0 dev $interface ; do |
---|
66 | true |
---|
67 | done |
---|
68 | |
---|
69 | for i in $router ; do |
---|
70 | route add default gw $i dev $interface |
---|
71 | done |
---|
72 | fi |
---|
73 | |
---|
74 | echo -n > $RESOLV_CONF |
---|
75 | [ -n "$domain" ] && echo search $domain >> $RESOLV_CONF |
---|
76 | for i in $dns ; do |
---|
77 | echo nameserver $i >> $RESOLV_CONF |
---|
78 | done |
---|
79 | ;; |
---|
80 | esac |
---|
81 | |
---|
82 | exit 0 |
---|
83 | </literal>EOF |
---|
84 | |
---|
85 | chmod +x ${CLFS}/targetfs/usr/share/udhcpc/default.script</userinput></screen> |
---|
86 | |
---|
87 | </sect2> |
---|
88 | |
---|
89 | </sect1> |
---|