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