aboutsummaryrefslogtreecommitdiffstats
path: root/sysconfig/network-scripts/ifup
blob: 0001cbf63383fa8818ddadc0785f1b8dccc23f52 (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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
#!/bin/bash
# Network Interface Configuration System
# Copyright (c) 1996-2001 Red Hat, Inc. all rights reserved.
#
# This software may be freely redistributed under the terms of the GNU
# public license.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

. /etc/init.d/functions

cd /etc/sysconfig/network-scripts
. network-functions

[ -f ../network ] && . ../network
[ -f ../networking/network ] && . ../networking/network

CONFIG=${1}

[ -z "${CONFIG}" ] && {
    echo $"Usage: ifup <device name>" >&2
    exit 1
}

need_config ${CONFIG}

[ -f "${CONFIG}" ] || {
    echo $"$0: configuration for ${1} not found." >&2
    echo $"Usage: ifup <device name>" >&2
    exit 1
}

if [ ${UID} != 0 ]; then
    if [ -x /usr/sbin/usernetctl ]; then
	source_config
	if /usr/sbin/usernetctl ${DEVICE} report ; then
	    exec /usr/sbin/usernetctl ${DEVICE} up
	fi
    fi
    echo $"Users cannot control this device." >&2
    exit 1
fi

source_config

if [ "foo$2" = "fooboot" -a "${ONBOOT}" = "no" -o "${ONBOOT}" = "NO" ]
then
    exit 0
fi
if [ -n "$IN_HOTPLUG" -a "${HOTPLUG}" = "no" -o "${HOTPLUG}" = "NO" ]
then
    exit 0
fi

# figure out more about what we are dealing with
DEVICETYPE=`echo ${DEVICE} | sed "s/[0-9]*$//"`
[ -z "$REALDEVICE" ] && REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'`
if echo ${DEVICE} | grep -q ':' ; then
    ISALIAS=yes
else
    ISALIAS=no
fi

# Ethernet 802.1Q VLAN support
if [ -x /sbin/vconfig -a "${VLAN}" = "yes" ]; then
    if echo ${DEVICE} | LANG=C egrep -v '(:)' | LANG=C egrep -q 'eth[0-9][0-9]*\.[0-9][0-9]?[0-9]?[0-9]?' ; then
	if [ ! -d /proc/net/vlan ]; then
            if modprobe 8021q >/dev/null 2>&1 ; then
		/sbin/vconfig set_name_type DEV_PLUS_VID_NO_PAD >/dev/null 2>&1 || {
		    echo $"Could not set 802.1Q VLAN parameters."
		}
	    else
		echo $"No 802.1Q VLAN support available in kernel for device ${DEVICE}"
		exit 1
	    fi
	fi
	VID="`echo ${DEVICE} | \
	    LANG=C egrep 'eth[0-9]+\.[0-9][0-9]?[0-9]?[0-9]?$' | \
	    LANG=C sed 's/^[a-z0-9]*\.//g;s/^0*//'`"
	PHYSDEV="`echo ${DEVICE} | \
	    LANG=C egrep 'eth[0-9]+\.[0-9][0-9]?[0-9]?[0-9]?$' | \
	    LANG=C sed 's/\.[a-z0-9]*$//g'`"

	is_available ${PHYSDEV} || {
	    if [ "$?" = "1" ] ; then
		echo $"$alias device ${DEVICE} does not seem to be present, delaying initialization."
		exit 1
	    else
		exit 0
	    fi
	}

	# Link on Physical device needs to be up but no ip required
	check_device_down ${PHYSDEV} && {
	    ip -o link set dev ${PHYSDEV} up
	}

	if [ ! -f /proc/net/vlan/${DEVICE} ]; then
	    /sbin/vconfig add ${PHYSDEV} ${VID} || {
		(logger -p daemon.info -t ifup \
		    $"ERROR: could not add vlan ${VID} as ${DEVICE} on dev ${PHYSDEV}" &)&
		echo $"ERROR: could not add vlan ${VID} as ${DEVICE} on dev ${PHYSDEV}"
		exit 1
	    }
	fi

	if [ -f /proc/net/vlan/${DEVICE} ]; then
	    case "$REORDER_HDR" in
		yes|1)
		    /sbin/vconfig set_flag ${DEVICE} 1 1 || {
			(logger -p daemon.info -t ifup \
			    "WARNING: vconfig not able to enable REORDER_HDR on ${DEVICE}" &)&
		    }
		    ;;
		no|0)
		    /sbin/vconfig set_flag ${DEVICE} 1 0 || {
			(logger -p daemon.info -t ifup \
			    $"WARNING: vconfig not able to disable REORDER_HDR on ${DEVICE}" &)&
		    }
		    ;;
	    esac
	fi
    fi
fi

# Old BOOTP variable
if [ "${BOOTP}" = "yes" ]; then
    BOOTPROTO=bootp
fi

if [ "${BOOTPROTO}" = "bootp" -o "${BOOTPROTO}" = "dhcp" ]; then
    DYNCONFIG=true
fi

if [ -x /sbin/ifup-pre-local ]; then
    /sbin/ifup-pre-local ${DEVICE}
fi

OTHERSCRIPT="/etc/sysconfig/network-scripts/ifup-${DEVICETYPE}"

if [ -x ${OTHERSCRIPT} ]; then
    exec ${OTHERSCRIPT} ${CONFIG} $2
fi

is_available ${REALDEVICE} || {
      if [ "$?" = "1" ] ; then
         echo $"$alias device ${DEVICE} does not seem to be present, delaying initialization."
         exit 1
      else
         exit 0
      fi
}
if [ -n "${HWADDR}" ]; then
    FOUNDMACADDR=`LC_ALL= LANG= ip -o link show ${REALDEVICE} | \
	sed 's/.*link\/ether \([[:alnum:]:]*\).*/\1/'`
    if [ "${FOUNDMACADDR}" != "${HWADDR}" ]; then
        /sbin/nameif "${REALDEVICE}" "${HWADDR}" || {
	   echo $"Device ${DEVICE} has different MAC address than expected, ignoring."
	   exit 1
	}
    fi
fi

# is the device wireless? If so, configure wireless device specifics
is_wireless_device ${DEVICE} && . ./ifup-wireless

# slave device?
if [ "${SLAVE}" = yes -a "${ISALIAS}" = no -a "${MASTER}" != "" -a \
     -x /sbin/ifenslave ]; then
    RFLAG="" ; [ "${RECEIVEONLY}" = yes ] && RFLAG="-r"

    /sbin/ip link set ${DEVICE} down
    echo $"Enslaving ${DEVICE} to ${MASTER}"
    ifenslave ${RFLAG} "${MASTER}" "${DEVICE}"

    exit 0
fi

# this isn't the same as the MAC in the configuration filename.  It is
# available as a configuration option in the config file, forcing the kernel
# to think an ethernet card has a different MAC address than it really has.
if [ -n "${MACADDR}" ]; then
   ip link set ${DEVICE} address ${MACADDR}
fi
if [ -n "${MTU}" ]; then
   ip link set ${DEVICE} mtu ${MTU}
fi

# Is there a firewall running, and does it look like one we configured?
FWACTIVE=
if iptables -L -n 2>/dev/null | grep -q RH-Lokkit-0-50 ; then
    FWACTIVE=1
else
    modprobe -r iptable_filter >/dev/null 2>&1
fi

# Remove any temporary references which were previously added to dhclient config
if [ -w /etc/dhclient-${DEVICE}.conf ] && [ -x /sbin/dhclient ] ; then
   grep -v "# temporary RHL ifup addition" /etc/dhclient-${DEVICE}.conf > /etc/dhclient-${DEVICE}.conf.ifupnew 2> /dev/null
   cat /etc/dhclient-${DEVICE}.conf.ifupnew > /etc/dhclient-${DEVICE}.conf
   rm -f /etc/dhclient-${DEVICE}.conf.ifupnew
fi
		     
if [ -n "${DYNCONFIG}" ]; then
    PUMPARGS=$PUMPARGS
    DHCPCDARGS="$DHCPCDARGS -n"
    DHCLIENTARGS="${DHCLIENTARGS} -1 -q -lf /var/lib/dhcp/dhclient-${DEVICE}.leases -pf /var/run/dhclient-${DEVICE}.pid -cf /etc/dhclient-${DEVICE}.conf"
    if [ -n "${DHCP_HOSTNAME}" ]; then
       # Send a host-name to the DHCP server (requ. by some dhcp servers).
       PUMPARGS="${PUMPARGS} -h ${DHCP_HOSTNAME}"
       DHCPCDARGS="${DHCPCDARGS} -h ${DHCP_HOSTNAME}"
       if [ -x /sbin/dhclient ] ; then
          if [ -w /etc/dhclient-${DEVICE}.conf ] ; then
             if ! grep "send *host-name *\"${DHCP_HOSTNAME}\"" /etc/dhclient-${DEVICE}.conf > /dev/null 2>&1 ; then
                echo "send host-name \"${DHCP_HOSTNAME}\";  # temporary RHL ifup addition" >> /etc/dhclient-${DEVICE}.conf
             fi
          elif ! [ -e /etc/dhclient-${DEVICE}.conf ] ; then
             echo "send host-name \"${DHCP_HOSTNAME}\";  # temporary RHL ifup addition" >> /etc/dhclient-${DEVICE}.conf
          fi
       fi
    fi
    if need_hostname; then
       # Set hostname of host to host-name option supplied by DHCP.
       PUMPARGS="${PUMPARGS} --lookup-hostname"
       DHCPCDARGS="${DHCPCDARGS} -H"
    fi
    if [ "${PEERDNS}" = "no" ]; then
       # Do not update/replace resolv.conf.
       PUMPARGS="${PUMPARGS} -d"
       DHCPCDARGS="${DHCPCDARGS} -R"
    fi
    echo
    echo -n $"Determining IP information for ${DEVICE}..."
    if check_link_down ${DEVICE}; then
	echo $" failed; no link present.  Check cable?"
	ip link set ${DEVICE} down >/dev/null 2>&1
	exit 1
    fi

    # DHCP clients need DNS to be available, and we don't know
    # what DNS server they're using until they are done.
    FWHACK=
    if [ -n "$FWACTIVE" -a "$FIREWALL_MODS" != "no" ]; then
        iptables -I RH-Lokkit-0-50 -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT
	FWHACK=1
    fi
    
    if [ -x /sbin/dhclient ] && /sbin/dhclient ${DHCLIENTARGS} ${DEVICE} ; then
	echo $" done."
    elif [ -z "`pidof -x dhclient`" ] && [ -x /sbin/dhcpcd ] && /sbin/dhcpcd ${DHCPCDARGS} ${DEVICE} ; then
	echo $" done."
    elif [ -z "`pidof -x dhclient`" ] && [ -z "`pidof -x dhcpcd`" ] && [ -x /sbin/pump ] && /sbin/pump ${PUMPARGS} -i ${DEVICE}; then
	echo $" done."
    else
	echo $" failed."
	[ -n "$FWHACK" ] && iptables -D RH-Lokkit-0-50 -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT
	exit 1
    fi

    [ -n "$FWHACK" ] && iptables -D RH-Lokkit-0-50 -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT

    # DHCP likes to create duplicate routes.  Fix that up.
    NUMDEFROUTES=`ip -o route | \
                  grep "^default" | \
                  awk '{ nlines++ } END { print nlines }'`
    if [ -n "$NUMDEFROUTES" -a "$NUMDEFROUTES" -gt 1 ]; then
	# remove the default route for the new device (old route wins)
	ip route del default dev ${DEVICE}
    fi
# end dynamic device configuration
else 
    if [ -z "${IPADDR}" ]; then
         # enable device without IP, useful for e.g. PPPoE
	 ip link set ${REALDEVICE} up
	 if [ "${NETWORKING_IPV6}" = "yes" ]; then
	    /etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
	 fi
	 exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}
    fi
  
    expand_config
    
    [ -n "${ARP}" ] && \
	ip link set ${REALDEVICE} $(toggle_value arp $ARP)
   
    if ! ip link set ${REALDEVICE} up ; then
	echo $"Failed to bring up ${DEVICE}."
	exit 1
    fi

    if ! arping -q -c 2 -w 3 -D -I ${REALDEVICE} ${IPADDR} ; then
	echo $"Error, some other host already uses address ${IPADDR}."
	exit 1
    fi

    if [ "${DEVICE}" = "lo" ]; then
    	SCOPE="scope host"
    else
        SCOPE=${SCOPE:-}
    fi
    
    if [ -n "$SRCADDR" ]; then
       SRC="src $SRCADDR"
    else
       SRC=
    fi
    
    if ! LC_ALL=C ip addr ls ${REALDEVICE} | grep -q "${IPADDR}/${PREFIX}" ; then
	 if ! ip addr add ${IPADDR}/${PREFIX} \
	    brd ${BROADCAST:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
	    echo $"Error adding address ${IPADDR} for ${DEVICE}."
	 fi
    fi
    
    if [ -n "$SRCADDR" ]; then
           sysctl -w "net.ipv4.conf.${REALDEVICE}.arp_filter=1" >/dev/null 2>&1
    fi

    # update ARP cache of neighboring computers
    arping -q -A -c 1 -I ${REALDEVICE} ${IPADDR}
    ( sleep 2;
      arping -q -U -c 1 -I ${REALDEVICE} ${IPADDR} ) > /dev/null 2>&1 < /dev/null &

    # Add a route for the subnet.  Replace any existing route.
    if [ "${ISALIAS}" = no -a "${NETMASK}" != "255.255.255.255" ]; then
	ip route replace ${NETWORK}/${PREFIX} ${SRC} dev ${REALDEVICE}
    fi

    # Set a default route.
    if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then
	# set up default gateway. replace if one already exists
	if [ -n "${GATEWAY}" -a "`ipcalc --network ${GATEWAY} ${NETMASK} 2>/dev/null`" = "NETWORK=${NETWORK}" ]; then
	    ip route replace default via ${GATEWAY} ${SRC}
	elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
	    ip route replace default ${SRC} dev ${REALDEVICE}
	fi
    fi
    
fi

# Add Zeroconf route.
if [ -z "${NOZEROCONF}" -a "${ISALIAS}" = "no" ]; then
    ip route replace 169.254.0.0/16 dev ${REALDEVICE} 
fi

# IPv6 initialisation?
if [ "${NETWORKING_IPV6}" = "yes" ]; then
    /etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
fi

if [ "${IPX}" = yes ]; then
       /etc/sysconfig/network-scripts/ifup-ipx ${DEVICE}
fi

exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}