diskimage-builder/diskimage_builder/elements/ramdisk-base/init.d/20-init-variables
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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FIRST_ERR_MSG=
# To identify that the node has booted from virtual media, a kernel
# command-line argument boot_method=vmedia is added in the iso bootloader
# configuration file (like isolinux.cfg for isolinux).
VMEDIA_BOOT_TAG="vmedia"
BOOT_METHOD=$(get_kernel_parameter boot_method)
if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then
# If the node booted from virtual media cdrom, the arguments for the
# installation are provided in virtual media floppy. Find out
# the virtual media device, mount it and get the information.
configure_vmedia_dir
fi
readonly _BOOTIF_=$(get_kernel_parameter BOOTIF)
readonly _IP_=$(get_kernel_parameter ip)
# _BOOTIF_ is the hardware type with the MAC address
# see http://www.syslinux.org/wiki/index.php/PXELINUX
if [[ $_BOOTIF_ =~ ^20.* && ${#_BOOTIF_} == 20 ]]; then
# InfiniBand hardware type is 20 with InfiniBand MAC
# For example InfiniBand GID:
# 80:00:02:08:fe:80:00:00:00:00:00:00:f4:52:14:03:00:3a:16:b1
# is converted to BOOTIF 20:f4:52:14:3a:16:b1
MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g" | \
sed -e "s/^20://g" | tr 'a-f' 'A-F')
else
# Ethernet BOOTIF hardware type is 01 with MAC
MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g" | \
sed -e "s/^01://g" | tr 'a-f' 'A-F')
fi
readonly BOOT_MAC_ADDRESS=$MAC_ADDRESS
# If bootloader did not pass on network info, we fallback to a kernel
# parameter to locate the address of the boot server.
if [ -n "$_IP_" ]; then
readonly BOOT_SERVER=$(echo "$_IP_" | cut -d':' -f2)
else
readonly BOOT_SERVER=$(get_kernel_parameter boot_server)
fi
# IP address, netmask, gateway can be set a later point of time if
# IP address is assigned by dhcp (for non-pxe boots).
BOOT_IP_ADDRESS=$(echo "$_IP_" | cut -d':' -f1)
BOOT_NETMASK=$(echo "$_IP_" | cut -d':' -f4)
BOOT_GATEWAY=$(echo "$_IP_" | cut -d':' -f3)
readonly DISK=$(get_kernel_parameter disk)
readonly DEPLOYMENT_ID=$(get_kernel_parameter deployment_id)
readonly DEPLOYMENT_KEY=$(get_kernel_parameter deployment_key)
readonly ISCSI_TARGET_IQN=$(get_kernel_parameter iscsi_target_iqn)
TROUBLESHOOT=$(get_kernel_parameter troubleshoot)