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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (c) 2013, Intel Corporation.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# DESCRIPTION
# This module implements the image creation engine used by 'wic' to
# create images. The engine parses through the OpenEmbedded kickstart
# (wks) file specified and generates images that can then be directly
# written onto media.
#
# AUTHORS
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
#
import os
import sys
from abc import ABCMeta, abstractmethod
import shlex
import json
import subprocess
import shutil
import os, sys, errno
from wic import msger, creator
from wic.utils import cmdln, misc, errors
from wic.conf import configmgr
from wic.plugin import pluginmgr
from wic.__version__ import VERSION
from wic.utils.oe import misc
def verify_build_env():
"""
Verify that the build environment is sane.
Returns True if it is, false otherwise
"""
try:
builddir = os.environ["BUILDDIR"]
except KeyError:
print "BUILDDIR not found, exiting. (Did you forget to source oe-init-build-env?)"
sys.exit(1)
return True
def find_artifacts(image_name):
"""
Gather the build artifacts for the current image (the image_name
e.g. core-image-minimal) for the current MACHINE set in local.conf
"""
bitbake_env_lines = misc.get_bitbake_env_lines()
rootfs_dir = kernel_dir = bootimg_dir = native_sysroot = ""
for line in bitbake_env_lines.split('\n'):
if (misc.get_line_val(line, "IMAGE_ROOTFS")):
rootfs_dir = misc.get_line_val(line, "IMAGE_ROOTFS")
continue
if (misc.get_line_val(line, "DEPLOY_DIR_IMAGE")):
kernel_dir = misc.get_line_val(line, "DEPLOY_DIR_IMAGE")
continue
if (misc.get_line_val(line, "STAGING_DIR_NATIVE")):
native_sysroot = misc.get_line_val(line, "STAGING_DIR_NATIVE")
continue
return (rootfs_dir, kernel_dir, bootimg_dir, native_sysroot)
CANNED_IMAGE_DIR = "lib/image/canned-wks" # relative to scripts
SCRIPTS_CANNED_IMAGE_DIR = "scripts/" + CANNED_IMAGE_DIR
def build_canned_image_list(dl):
layers_path = misc.get_bitbake_var("BBLAYERS")
canned_wks_layer_dirs = []
if layers_path is not None:
for layer_path in layers_path.split():
path = os.path.join(layer_path, SCRIPTS_CANNED_IMAGE_DIR)
canned_wks_layer_dirs.append(path)
path = os.path.join(dl, CANNED_IMAGE_DIR)
canned_wks_layer_dirs.append(path)
return canned_wks_layer_dirs
def find_canned_image(scripts_path, wks_file):
"""
Find a .wks file with the given name in the canned files dir.
Return False if not found
"""
layers_canned_wks_dir = build_canned_image_list(scripts_path)
for canned_wks_dir in layers_canned_wks_dir:
for root, dirs, files in os.walk(canned_wks_dir):
for file in files:
if file.endswith("~") or file.endswith("#"):
continue
if file.endswith(".wks") and wks_file + ".wks" == file:
fullpath = os.path.join(canned_wks_dir, file)
return fullpath
return None
def list_canned_images(scripts_path):
"""
List the .wks files in the canned image dir, minus the extension.
"""
layers_canned_wks_dir = build_canned_image_list(scripts_path)
for canned_wks_dir in layers_canned_wks_dir:
for root, dirs, files in os.walk(canned_wks_dir):
for file in files:
if file.endswith("~") or file.endswith("#"):
continue
if file.endswith(".wks"):
fullpath = os.path.join(canned_wks_dir, file)
f = open(fullpath, "r")
lines = f.readlines()
for line in lines:
desc = ""
idx = line.find("short-description:")
if idx != -1:
desc = line[idx + len("short-description:"):].strip()
break
basename = os.path.splitext(file)[0]
print " %s\t\t%s" % (basename.ljust(30), desc)
def list_canned_image_help(scripts_path, fullpath):
"""
List the help and params in the specified canned image.
"""
f = open(fullpath, "r")
lines = f.readlines()
found = False
for line in lines:
if not found:
idx = line.find("long-description:")
if idx != -1:
print
print line[idx + len("long-description:"):].strip()
found = True
continue
if not line.strip():
break
idx = line.find("#")
if idx != -1:
print line[idx + len("#:"):].rstrip()
else:
break
def list_source_plugins():
"""
List the available source plugins i.e. plugins available for --source.
"""
plugins = pluginmgr.get_source_plugins()
for plugin in plugins:
print " %s" % plugin
def wic_create(args, wks_file, rootfs_dir, bootimg_dir, kernel_dir,
native_sysroot, scripts_path, image_output_dir, debug,
properties_file, properties=None):
"""Create image
wks_file - user-defined OE kickstart file
rootfs_dir - absolute path to the build's /rootfs dir
bootimg_dir - absolute path to the build's boot artifacts directory
kernel_dir - absolute path to the build's kernel directory
native_sysroot - absolute path to the build's native sysroots dir
scripts_path - absolute path to /scripts dir
image_output_dir - dirname to create for image
properties_file - use values from this file if nonempty i.e no prompting
properties - use values from this string if nonempty i.e no prompting
Normally, the values for the build artifacts values are determined
by 'wic -e' from the output of the 'bitbake -e' command given an
image name e.g. 'core-image-minimal' and a given machine set in
local.conf. If that's the case, the variables get the following
values from the output of 'bitbake -e':
rootfs_dir: IMAGE_ROOTFS
kernel_dir: DEPLOY_DIR_IMAGE
native_sysroot: STAGING_DIR_NATIVE
In the above case, bootimg_dir remains unset and the
plugin-specific image creation code is responsible for finding the
bootimg artifacts.
In the case where the values are passed in explicitly i.e 'wic -e'
is not used but rather the individual 'wic' options are used to
explicitly specify these values.
"""
try:
oe_builddir = os.environ["BUILDDIR"]
except KeyError:
print "BUILDDIR not found, exiting. (Did you forget to source oe-init-build-env?)"
sys.exit(1)
direct_args = list()
direct_args.insert(0, oe_builddir)
direct_args.insert(0, image_output_dir)
direct_args.insert(0, wks_file)
direct_args.insert(0, rootfs_dir)
direct_args.insert(0, bootimg_dir)
direct_args.insert(0, kernel_dir)
direct_args.insert(0, native_sysroot)
direct_args.insert(0, "direct")
if debug:
msger.set_loglevel('debug')
cr = creator.Creator()
cr.main(direct_args)
print "\nThe image(s) were created using OE kickstart file:\n %s" % wks_file
def wic_list(args, scripts_path, properties_file):
"""
Print the complete list of properties defined by the image, or the
possible values for a particular image property.
"""
if len(args) < 1:
return False
if len(args) == 1:
if args[0] == "images":
list_canned_images(scripts_path)
return True
elif args[0] == "source-plugins":
list_source_plugins()
return True
elif args[0] == "properties":
return True
else:
return False
if len(args) == 2:
if args[0] == "properties":
wks_file = args[1]
print "print properties contained in wks file: %s" % wks_file
return True
elif args[0] == "property":
print "print property values for property: %s" % args[1]
return True
elif args[1] == "help":
wks_file = args[0]
fullpath = find_canned_image(scripts_path, wks_file)
if not fullpath:
print "No image named %s found, exiting. (Use 'wic list images' to list available images, or specify a fully-qualified OE kickstart (.wks) filename)\n" % wks_file
sys.exit(1)
list_canned_image_help(scripts_path, fullpath)
return True
else:
return False
return False
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