diskimage-builder/diskimage_builder/elements/ramdisk/init.d/30-start-network
Ian Wienand 97c01e48ed Move elements & lib relative to diskimage_builder package
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).

The problem with this is that editable/development installs (pip -e)
do *not* install data_files.  Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.

data_files is really the wrong thing to use for what are essentially
assets of the program.  data_files install works well for things like
config-files, init.d files or dropping documentation files.

By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from.  In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].

We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.

Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.

I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.

Unfortunately, this has to move to work with setuptools.  You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.

[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do.  Essentially for us it's returning
__file__.

Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
2016-11-01 17:27:41 -07:00

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echo "starting network $BOOT_MAC_ADDRESS"
t=0
while ! BOOT_INTERFACE=$(find_interface "$BOOT_MAC_ADDRESS"); do
t=`expr "$t" + 5`
if [ "$t" -gt 10 ]; then
break
fi
sleep 5
done
if [ -z "$BOOT_INTERFACE" ]; then
err_msg "Could not find an interface that owns MAC: $BOOT_MAC_ADDRESS"
troubleshoot
fi
readonly BOOT_INTERFACE
ifconfig lo 127.0.0.1 up
rv=0
ifconfig "$BOOT_INTERFACE" up || rv=1
if [ $rv -ne 0 ]; then
sleep 10
rv=0
ifconfig "$BOOT_INTERFACE" up || rv=1
if [ $? -ne 0 ]; then
err_msg "Failed to ifconfig up $BOOT_INTERFACE"
troubleshoot
fi
fi
# Check if boot IP address was specific or retrieve from DHCP
if [ -n "$BOOT_IP_ADDRESS" ]; then
ifconfig "$BOOT_INTERFACE" "$BOOT_IP_ADDRESS" netmask "$BOOT_NETMASK"
route del default || true
route add default gw $BOOT_GATEWAY
else
dhclient -1 "$BOOT_INTERFACE"
if [[ $? == 2 ]]; then
echo "Error getting IP address for $BOOT_INTERFACE with MAC \
$BOOT_MAC_ADDRESS"
troubleshoot
fi
BOOT_IP_ADDRESS=$(ifconfig "$BOOT_INTERFACE" | grep 'inet addr:' | \
cut -d: -f2 | awk '{ print $1}')
BOOT_NETMASK=$(ifconfig "$BOOT_INTERFACE" | grep 'Mask:' | cut -d':' -f4)
BOOT_GATEWAY=$(route -n | grep "$BOOT_INTERFACE" | grep '^0.0.0.0' | \
awk '{print $2}')
echo "obtained the following from dhcp: "
echo " ip address = $BOOT_IP_ADDRESS"
echo " netmask = $BOOT_NETMASK"
echo " gateway = $BOOT_GATEWAY"
fi