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e4c4c35d12
Make shill and flimflam ignore pseudomodem0p on test builds so that the network devices called pseudomodem0p can be used to test the cellular classes of shill on virtual machines. BUG=none TEST=run network_3GModemControl on a vm Change-Id: I61cc89d114dcb82bb01b864b68f220fbaf21509d Reviewed-on: https://gerrit.chromium.org/gerrit/23059 Commit-Ready: Jason Glasgow <jglasgow@chromium.org> Reviewed-by: Jason Glasgow <jglasgow@chromium.org> Tested-by: Jason Glasgow <jglasgow@chromium.org>
136 lines
4.4 KiB
Bash
Executable File
136 lines
4.4 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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echo "Configuring for backchannel network device"
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testif=eth_test
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modemif=pseudomodem0p
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# Prevent flimflam from taking control of the backchannel network device.
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ORIG_CONF=${ROOT_FS_DIR}/etc/init/flimflam.conf
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TEMP_CONF=${ORIG_CONF}.tmp
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sed -e "s,flimflamd,flimflamd -I ${testif} -I ${modemif}," \
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-e "s@SHILL_TEST_ARGS=\"\"@SHILL_TEST_ARGS=\"--device-black-list=${testif},${modemif}\"@" \
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${ORIG_CONF} > ${TEMP_CONF}
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mv -f ${TEMP_CONF} ${ORIG_CONF}
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# Arrange to run dhclient on the backchannel device but without
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# installing the default route, and stashing said route away for later
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# installation as a host route.
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cat > ${ROOT_FS_DIR}/etc/udev/rules.d/50-backchannel-network.rules <<EOF
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KERNEL=="eth*", SUBSYSTEMS=="usb", ACTION=="add", RUN+="/sbin/backchannel-setup %k"
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KERNEL=="${testif}", SUBSYSTEMS=="usb", ACTION=="remove", RUN+="kill \$(cat /var/run/dhclient-%k.pid)"
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EOF
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cat > ${ROOT_FS_DIR}/sbin/backchannel-setup <<EOF
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#!/bin/sh
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testif=${testif}
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if [ ! -f /mnt/stateful_partition/etc/enable_backchannel_network ]; then
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# This mechanism has to be explicitly enabled on the device.
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exit
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fi
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if [ -f /var/run/dhclient-\${testif}.pid ]; then
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# Something else is already going on - perhaps a second
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# USB Ethernet device has been inserted. Let's not mess with it.
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exit
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fi
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if [ "\$1" != "\${testif}" ]; then
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initctl stop flimflam
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# \$1 is the current name of the backchannel device. Swap it with testif.
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if ifconfig \${testif} > /dev/null 2>&1; then
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orig_mac=\$(ifconfig \${testif} | awk '/HWaddr/ {print \$5}')
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ifconfig \${testif} down # must be down for nameif to work
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nameif eth_tmp \${orig_mac}
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fi
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bdev_mac=\$(ifconfig \$1 | awk '/HWaddr/ {print \$5}')
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ifconfig \$1 down # must be down for nameif to work
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nameif \${testif} \${bdev_mac}
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if [ -n "\${orig_mac}" ]; then
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nameif \$1 \${orig_mac}
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fi
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initctl start flimflam
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fi
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# Bring up the backchannel interface
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dhclient -q -pf /var/run/dhclient-\${testif}.pid \\
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-lf /var/run/dhclient-\${testif}.leases \\
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-cf /etc/dhclient-backchannel.conf \\
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-sf /sbin/dhclient-backchannel-script \\
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\${testif}
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EOF
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chmod +x ${ROOT_FS_DIR}/sbin/backchannel-setup
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cat > ${ROOT_FS_DIR}/etc/dhclient-backchannel.conf <<EOF
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request subnet-mask, broadcast-address, routers;
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EOF
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cat > ${ROOT_FS_DIR}/sbin/dhclient-backchannel-script <<EOF
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#!/bin/sh
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if [ -n "\$new_broadcast_address" ]; then
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new_broadcast_arg="broadcast \$new_broadcast_address"
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fi
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if [ -n "\$new_subnet_mask" ]; then
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new_subnet_arg="netmask \$new_subnet_mask"
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fi
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case "\$reason" in
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MEDIUM|ARPCHECK|ARPSEND)
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# Do nothing
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;;
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PREINIT)
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# The DHCP client is requesting that an interface be
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# configured as required in order to send packets prior to
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# receiving an actual address. - dhclient-script(8)
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ifconfig \$interface inet 0 up
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# We need to give the kernel some time to get the interface up.
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sleep 1
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;;
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BOUND|RENEW|REBIND|REBOOT|TIMEOUT)
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if [ -n "\$old_ip_address" -a \
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"\$old_ip_address" != "\$new_ip_address" ]; then
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# IP address changed. Bringing down the interface will delete all routes,
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# and clear the ARP cache.
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ifconfig \$interface inet 0
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fi
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if [ -z "\$old_ip_address" -o "\$old_ip_address" != "\$new_ip_address" -o \
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"\$reason" = "BOUND" -o "\$reason" = "REBOOT" ]; then
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ifconfig \$interface inet \$new_ip_address \$new_subnet_arg \
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\$new_broadcast_arg \$mtu_arg
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# Since this script is for the backchannel testing interface,
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# we don't set the default route from here, but we do stash
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# it for possible later use in setting up a host route.
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cp /dev/null /var/run/dhclient-\${interface}.routers
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for router in \$new_routers; do
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echo \$router >> /var/run/dhclient-\${interface}.routers
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done
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fi
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;;
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EXPIRE|FAIL|RELEASE|STOP)
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if [ -n "\$old_ip_address" ]; then
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# Shut down interface, which will delete routes and clear arp cache.
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ifconfig \$interface inet 0
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fi
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;;
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esac
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EOF
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chmod +x ${ROOT_FS_DIR}/sbin/dhclient-backchannel-script
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