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1 #!/bin/bash | 1 #!/bin/bash |
2 | 2 |
3 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved. | 3 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved. |
4 # Use of this source code is governed by a BSD-style license that can be | 4 # Use of this source code is governed by a BSD-style license that can be |
5 # found in the LICENSE file. | 5 # found in the LICENSE file. |
6 | 6 |
7 echo "Configuring for backchannel network device" | 7 echo "Configuring for backchannel network device" |
8 | 8 |
9 testif=eth_test | 9 testif=eth_test |
10 | 10 |
11 # Prevent connman from taking control of the backchannel network device. | 11 # Prevent flimflam from taking control of the backchannel network device. |
12 ORIG_CONF=${ROOT_FS_DIR}/etc/init/connman.conf | 12 ORIG_CONF=${ROOT_FS_DIR}/etc/init/flimflam.conf |
13 TEMP_CONF=${ORIG_CONF}.tmp | 13 TEMP_CONF=${ORIG_CONF}.tmp |
14 sed "s/connmand -W/connmand -I ${testif} -W/" ${ORIG_CONF} > ${TEMP_CONF} | 14 sed "s/flimflamd -W/flimflamd -I ${testif} -W/" ${ORIG_CONF} > ${TEMP_CONF} |
15 mv -f ${TEMP_CONF} ${ORIG_CONF} | 15 mv -f ${TEMP_CONF} ${ORIG_CONF} |
16 | 16 |
17 # Arrange to run dhclient on the backchannel device but without | 17 # Arrange to run dhclient on the backchannel device but without |
18 # installing the default route, and stashing said route away for later | 18 # installing the default route, and stashing said route away for later |
19 # installation as a host route. | 19 # installation as a host route. |
20 cat > ${ROOT_FS_DIR}/etc/udev/rules.d/50-backchannel-network.rules <<EOF | 20 cat > ${ROOT_FS_DIR}/etc/udev/rules.d/50-backchannel-network.rules <<EOF |
21 KERNEL=="eth*", SUBSYSTEMS=="usb", ACTION=="add", RUN+="/sbin/backchannel-setup
%k" | 21 KERNEL=="eth*", SUBSYSTEMS=="usb", ACTION=="add", RUN+="/sbin/backchannel-setup
%k" |
22 KERNEL=="${testif}", SUBSYSTEMS=="usb", ACTION=="remove", RUN+="kill \$(cat /var
/run/dhclient-%k.pid)" | 22 KERNEL=="${testif}", SUBSYSTEMS=="usb", ACTION=="remove", RUN+="kill \$(cat /var
/run/dhclient-%k.pid)" |
23 EOF | 23 EOF |
24 | 24 |
25 cat > ${ROOT_FS_DIR}/sbin/backchannel-setup <<EOF | 25 cat > ${ROOT_FS_DIR}/sbin/backchannel-setup <<EOF |
26 #!/bin/sh | 26 #!/bin/sh |
27 | 27 |
28 testif=${testif} | 28 testif=${testif} |
29 | 29 |
30 if [ ! -f /mnt/stateful_partition/etc/enable_backchannel_network ]; then | 30 if [ ! -f /mnt/stateful_partition/etc/enable_backchannel_network ]; then |
31 # This mechanism has to be explicitly enabled on the device. | 31 # This mechanism has to be explicitly enabled on the device. |
32 exit | 32 exit |
33 fi | 33 fi |
34 | 34 |
35 if [ -f /var/run/dhclient-\${testif}.pid ]; then | 35 if [ -f /var/run/dhclient-\${testif}.pid ]; then |
36 # Something else is already going on - perhaps a second | 36 # Something else is already going on - perhaps a second |
37 # USB Ethernet device has been inserted. Let's not mess with it. | 37 # USB Ethernet device has been inserted. Let's not mess with it. |
38 exit | 38 exit |
39 fi | 39 fi |
40 | 40 |
41 if [ "\$1" != "\${testif}" ]; then | 41 if [ "\$1" != "\${testif}" ]; then |
42 initctl stop connman | 42 initctl stop flimflam |
43 # \$1 is the current name of the backchannel device. Swap it with testif. | 43 # \$1 is the current name of the backchannel device. Swap it with testif. |
44 if ifconfig \${testif} > /dev/null 2>&1; then | 44 if ifconfig \${testif} > /dev/null 2>&1; then |
45 orig_mac=\$(ifconfig \${testif} | awk '/HWaddr/ {print \$5}') | 45 orig_mac=\$(ifconfig \${testif} | awk '/HWaddr/ {print \$5}') |
46 ifconfig \${testif} down # must be down for nameif to work | 46 ifconfig \${testif} down # must be down for nameif to work |
47 nameif eth_tmp \${orig_mac} | 47 nameif eth_tmp \${orig_mac} |
48 fi | 48 fi |
49 bdev_mac=\$(ifconfig \$1 | awk '/HWaddr/ {print \$5}') | 49 bdev_mac=\$(ifconfig \$1 | awk '/HWaddr/ {print \$5}') |
50 ifconfig \$1 down # must be down for nameif to work | 50 ifconfig \$1 down # must be down for nameif to work |
51 nameif \${testif} \${bdev_mac} | 51 nameif \${testif} \${bdev_mac} |
52 if [ -n "\${orig_mac}" ]; then | 52 if [ -n "\${orig_mac}" ]; then |
53 nameif \$1 \${orig_mac} | 53 nameif \$1 \${orig_mac} |
54 fi | 54 fi |
55 initctl start connman | 55 initctl start flimflam |
56 fi | 56 fi |
57 | 57 |
58 # Bring up the backchannel interface | 58 # Bring up the backchannel interface |
59 dhclient -q -pf /var/run/dhclient-\${testif}.pid \\ | 59 dhclient -q -pf /var/run/dhclient-\${testif}.pid \\ |
60 -lf /var/run/dhclient-\${testif}.leases \\ | 60 -lf /var/run/dhclient-\${testif}.leases \\ |
61 -cf /etc/dhclient-backchannel.conf \\ | 61 -cf /etc/dhclient-backchannel.conf \\ |
62 -sf /sbin/dhclient-backchannel-script \\ | 62 -sf /sbin/dhclient-backchannel-script \\ |
63 \${testif} | 63 \${testif} |
64 EOF | 64 EOF |
65 | 65 |
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123 EXPIRE|FAIL|RELEASE|STOP) | 123 EXPIRE|FAIL|RELEASE|STOP) |
124 if [ -n "\$old_ip_address" ]; then | 124 if [ -n "\$old_ip_address" ]; then |
125 # Shut down interface, which will delete routes and clear arp cache. | 125 # Shut down interface, which will delete routes and clear arp cache. |
126 ifconfig \$interface inet 0 | 126 ifconfig \$interface inet 0 |
127 fi | 127 fi |
128 ;; | 128 ;; |
129 esac | 129 esac |
130 EOF | 130 EOF |
131 | 131 |
132 chmod +x ${ROOT_FS_DIR}/sbin/dhclient-backchannel-script | 132 chmod +x ${ROOT_FS_DIR}/sbin/dhclient-backchannel-script |
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