blob: 21e83fa0355e5c0b497eddc8828288730be93105 (
plain)
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
|
#!/bin/sh
make_resolv_conf() {
echo search $new_domain_name >/etc/resolv.conf
for nameserver in $new_domain_name_servers; do
echo nameserver $nameserver >>/etc/resolv.conf
done
}
# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
exit_status=$1
if [ -f /etc/dhclient-exit-hooks ]; then
. /etc/dhclient-exit-hooks
fi
# probably should do something with exit status of the local script
exit $exit_status
}
# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
exit_status=0
. /etc/dhclient-enter-hooks
# allow the local script to abort processing of this state
# local script must set exit_status variable to nonzero.
if [ $exit_status -ne 0 ]; then
exit $exit_status
fi
fi
if [ x$new_broadcast_address != x ]; then
new_broadcast_arg="broadcast $new_broadcast_address"
fi
if [ x$old_broadcast_address != x ]; then
old_broadcast_arg="broadcast $old_broadcast_address"
fi
if [ x$new_subnet_mask != x ]; then
new_netmask_arg="netmask $new_subnet_mask"
fi
if [ x$old_subnet_mask != x ]; then
old_netmask_arg="netmask $old_subnet_mask"
fi
if [ x$alias_subnet_mask != x ]; then
alias_subnet_arg="netmask $alias_subnet_mask"
fi
ifconfig=/sbin/ifconfig
release=`uname -r`
release=`expr $release : '\(.*\)\..*'`
relmajor=`echo $release |sed -e 's/^\([^\.]*\)\..*$/\1/'`
relminor=`echo $release |sed -e 's/^.*\.\([^\.]*\)$/\1/'`
if [ x$reason = xMEDIUM ]; then
eval "$ifconfig $interface $medium"
$ifconfig $interface
sleep 1
exit_with_hooks 0
fi
if [ x$reason = xPREINIT ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ $relmajor -gt 5 ] || ( [ $relmajor -eq 5 ] && [ $relminor -ge 5 ] )
then
# Turn the interface on
$ifconfig $interface plumb
$ifconfig $interface up
else
$ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
broadcast 255.255.255.255 up
fi
exit_with_hooks 0
fi
if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
exit_with_hooks 0;
fi
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
current_hostname=`hostname`
if [ x$current_hostname = x ] || \
[ x$current_hostname = x$old_host_name ]; then
if [ x$current_hostname = x ] || \
[ x$new_host_name != x$old_host_name ]; then
hostname $new_host_name
fi
fi
if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
[ x$alias_ip_address != x$old_ip_address ]; then
$ifconfig ${interface}:1 inet 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
$ifconfig ${interface} inet 0 down
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
fi
if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
eval "$ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $medium"
route add $new_ip_address 127.1 1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router 1 >/dev/null 2>&1
done
fi
if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
make_resolv_conf
exit_with_hooks 0
fi
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ]; then
$ifconfig $interface inet 0 down
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
fi
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
exit_with_hooks 0
fi
if [ x$reason = xTIMEOUT ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
eval "$ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $medium"
sleep 1
set $new_routers
if ping -s -n -I 1 $1 64 1; then
if [ x$new_ip_address != x$alias_ip_address ] && \
[ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
route add $new_ip_address 127.1 1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router 1 >/dev/null 2>&1
done
make_resolv_conf
exit_with_hooks 0
fi
$ifconfig $interface inet 0 down
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
exit_with_hooks 1
fi
exit_with_hooks 0
|