diff options
Diffstat (limited to 'scripts/lib/image')
| -rw-r--r-- | scripts/lib/image/__init__.py | 22 | ||||
| -rw-r--r-- | scripts/lib/image/engine.py | 256 | ||||
| -rw-r--r-- | scripts/lib/image/help.py | 311 |
3 files changed, 589 insertions, 0 deletions
diff --git a/scripts/lib/image/__init__.py b/scripts/lib/image/__init__.py new file mode 100644 index 0000000000..1ff814e761 --- /dev/null +++ b/scripts/lib/image/__init__.py @@ -0,0 +1,22 @@ +# +# OpenEmbedded Image tools library +# +# 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. +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# diff --git a/scripts/lib/image/engine.py b/scripts/lib/image/engine.py new file mode 100644 index 0000000000..a9b530cc04 --- /dev/null +++ b/scripts/lib/image/engine.py @@ -0,0 +1,256 @@ +# 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 + + +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 get_line_val(line, key): + """ + Extract the value from the VAR="val" string + """ + if line.startswith(key + "="): + stripped_line = line.split('=')[1] + stripped_line = stripped_line.replace('\"', '') + return stripped_line + return None + + +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_cmd = "bitbake -e %s" % image_name + rc, bitbake_env_lines = exec_cmd(bitbake_env_cmd) + if rc != 0: + print "Couldn't get '%s' output, exiting." % bitbake_env_cmd + sys.exit(1) + + for line in bitbake_env_lines.split('\n'): + if (get_line_val(line, "IMAGE_ROOTFS")): + rootfs_dir = get_line_val(line, "IMAGE_ROOTFS") + continue + if (get_line_val(line, "STAGING_KERNEL_DIR")): + kernel_dir = get_line_val(line, "STAGING_KERNEL_DIR") + continue + if (get_line_val(line, "HDDDIR")): + hdddir = get_line_val(line, "HDDDIR") + continue + if (get_line_val(line, "STAGING_DATADIR")): + staging_data_dir = get_line_val(line, "STAGING_DATADIR") + continue + if (get_line_val(line, "STAGING_DIR_NATIVE")): + native_sysroot = get_line_val(line, "STAGING_DIR_NATIVE") + continue + + return (rootfs_dir, kernel_dir, hdddir, staging_data_dir, native_sysroot) + + +CANNED_IMAGE_DIR = "lib/image/canned-wks" # relative to scripts + +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 + """ + canned_wks_dir = os.path.join(scripts_path, CANNED_IMAGE_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. + """ + canned_wks_dir = os.path.join(scripts_path, CANNED_IMAGE_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, desc) + + +def list_canned_image_help(scripts_path, fullpath): + """ + List the help and params in the specified canned image. + """ + canned_wks_dir = os.path.join(scripts_path, CANNED_IMAGE_DIR) + + 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 wic_create(args, wks_file, rootfs_dir, bootimg_dir, kernel_dir, + native_sysroot, hdddir, staging_data_dir, scripts_path, + image_output_dir, 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 + hdddir - absolute path to the build's HDDDIR dir + staging_data_dir - absolute path to the build's STAGING_DATA_DIR 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: STAGING_KERNEL_DIR + native_sysroot: STAGING_DIR_NATIVE + hdddir: HDDDIR + staging_data_dir: STAGING_DATA_DIR + + In the above case, bootimg_dir remains unset and the image + creation code determines which of the passed-in directories to + use. + + 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, hdddir and staging_data_dir will + be unset, but bootimg_dir must be explicit i.e. explicitly set to + either hdddir or staging_data_dir, depending on the image being + generated. The other values (rootfs_dir, kernel_dir, and + native_sysroot) correspond to the same values found above via + 'bitbake -e'). + + """ + 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) + + +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] == "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 diff --git a/scripts/lib/image/help.py b/scripts/lib/image/help.py new file mode 100644 index 0000000000..cb3112cf08 --- /dev/null +++ b/scripts/lib/image/help.py @@ -0,0 +1,311 @@ +# 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 some basic help invocation functions along +# with the bulk of the help topic text for the OE Core Image Tools. +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# + +import subprocess +import logging + + +def subcommand_error(args): + logging.info("invalid subcommand %s" % args[0]) + + +def display_help(subcommand, subcommands): + """ + Display help for subcommand. + """ + if subcommand not in subcommands: + return False + + help = subcommands.get(subcommand, subcommand_error)[2] + pager = subprocess.Popen('less', stdin=subprocess.PIPE) + pager.communicate(help) + + return True + + +def wic_help(args, usage_str, subcommands): + """ + Subcommand help dispatcher. + """ + if len(args) == 1 or not display_help(args[1], subcommands): + print(usage_str) + + +def invoke_subcommand(args, parser, main_command_usage, subcommands): + """ + Dispatch to subcommand handler borrowed from combo-layer. + Should use argparse, but has to work in 2.6. + """ + if not args: + logging.error("No subcommand specified, exiting") + parser.print_help() + elif args[0] == "help": + wic_help(args, main_command_usage, subcommands) + elif args[0] not in subcommands: + logging.error("Unsupported subcommand %s, exiting\n" % (args[0])) + parser.print_help() + else: + usage = subcommands.get(args[0], subcommand_error)[1] + subcommands.get(args[0], subcommand_error)[0](args[1:], usage) + + +## +# wic help and usage strings +## + +wic_usage = """ + + Create a customized OpenEmbedded image + + usage: wic [--version] [--help] COMMAND [ARGS] + + Current 'wic' commands are: + create Create a new OpenEmbedded image + list List available values for options and image properties + + See 'wic help COMMAND' for more information on a specific command. +""" + +wic_help_usage = """ + + usage: wic help <subcommand> + + This command displays detailed help for the specified subcommand. +""" + +wic_create_usage = """ + + Create a new OpenEmbedded image + + usage: wic create <wks file or image name> [-o <DIRNAME> | --outdir <DIRNAME>] + [-i <JSON PROPERTY FILE> | --infile <JSON PROPERTY_FILE>] + [-e | --image-name] [-r, --rootfs-dir] [-b, --bootimg-dir] + [-k, --kernel-dir] [-n, --native-sysroot] [-s, --skip-build-check] + + This command creates an OpenEmbedded image based on the 'OE kickstart + commands' found in the <wks file>. + + The -o option can be used to place the image in a directory with a + different name and location. + + See 'wic help create' for more detailed instructions. +""" + +wic_create_help = """ + +NAME + wic create - Create a new OpenEmbedded image + +SYNOPSIS + wic create <wks file or image name> [-o <DIRNAME> | --outdir <DIRNAME>] + [-i <JSON PROPERTY FILE> | --infile <JSON PROPERTY_FILE>] + [-e | --image-name] [-r, --rootfs-dir] [-b, --bootimg-dir] + [-k, --kernel-dir] [-n, --native-sysroot] [-s, --skip-build-check] + +DESCRIPTION + This command creates an OpenEmbedded image based on the 'OE + kickstart commands' found in the <wks file>. + + In order to do this, wic needs to know the locations of the + various build artifacts required to build the image. + + Users can explicitly specify the build artifact locations using + the -r, -b, -k, and -n options. See below for details on where + the corresponding artifacts are typically found in a normal + OpenEmbedded build. + + Alternatively, users can use the -e option to have 'mic' determine + those locations for a given image. If the -e option is used, the + user needs to have set the appropriate MACHINE variable in + local.conf, and have sourced the build environment. + + The -e option is used to specify the name of the image to use the + artifacts from e.g. core-image-sato. + + The -r option is used to specify the path to the /rootfs dir to + use as the .wks rootfs source. + + The -b option is used to specify the path to the dir containing + the boot artifacts (e.g. /EFI or /syslinux dirs) to use as the + .wks bootimg source. + + The -k option is used to specify the path to the dir containing + the kernel to use in the .wks bootimg. + + The -n option is used to specify the path to the native sysroot + containing the tools to use to build the image. + + The -s option is used to skip the build check. The build check is + a simple sanity check used to determine whether the user has + sourced the build environment so that the -e option can operate + correctly. If the user has specified the build artifact locations + explicitly, 'wic' assumes the user knows what he or she is doing + and skips the build check. + + When 'wic -e' is used, the locations 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. In that case, the image is + created as if the following 'bitbake -e' variables were used: + + -r: IMAGE_ROOTFS + -k: STAGING_KERNEL_DIR + -n: STAGING_DIR_NATIVE + -b: HDDDIR and STAGING_DATA_DIR (handlers decide which to use) + + If 'wic -e' is not used, the user needs to select the appropriate + value for -b (as well as -r, -k, and -n). + + The -o option can be used to place the image in a directory with a + different name and location. + + As an alternative to the wks file, the image-specific properties + that define the values that will be used to generate a particular + image can be specified on the command-line using the -i option and + supplying a JSON object consisting of the set of name:value pairs + needed by image creation. + + The set of properties available for a given image type can be + listed using the 'wic list' command. +""" + +wic_list_usage = """ + + List available OpenEmbedded image properties and values + + usage: wic list images + wic list <image> help + wic list properties + wic list properties <wks file> + wic list property <property> + [-o <JSON PROPERTY FILE> | --outfile <JSON PROPERTY_FILE>] + + This command enumerates the set of available canned images as well as + help for those images. It also can be used to enumerate the complete + set of possible values for a specified option or property needed by + the image creation process. + + The first form enumerates all the available 'canned' images. + + The second form lists the detailed help information for a specific + 'canned' image. + + The third form enumerates all the possible values that exist and can + be specified in an OE kickstart (wks) file. + + The fourth form enumerates all the possible options that exist for + the set of properties specified in a given OE kickstart (ks) file. + + The final form enumerates all the possible values that exist and can + be specified for any given OE kickstart (wks) property. + + See 'wic help list' for more details. +""" + +wic_list_help = """ + +NAME + wic list - List available OpenEmbedded image properties and values + +SYNOPSIS + wic list images + wic list <image> help + wic list properties + wic list properties <wks file> + wic list property <property> + [-o <JSON PROPERTY FILE> | --outfile <JSON PROPERTY_FILE>] + +DESCRIPTION + This command enumerates the complete set of possible values for a + specified option or property needed by the image creation process. + + This command enumerates the set of available canned images as well + as help for those images. It also can be used to enumerate the + complete set of possible values for a specified option or property + needed by the image creation process. + + The first form enumerates all the available 'canned' images. + These are actually just the set of .wks files that have been moved + into the /scripts/lib/image/canned-wks directory). + + The second form lists the detailed help information for a specific + 'canned' image. + + The third form enumerates all the possible values that exist and + can be specified in a OE kickstart (wks) file. The output of this + can be used by the third form to print the description and + possible values of a specific property. + + The fourth form enumerates all the possible options that exist for + the set of properties specified in a given OE kickstart (wks) + file. If the -o option is specified, the list of properties, in + addition to being displayed, will be written to the specified file + as a JSON object. In this case, the object will consist of the + set of name:value pairs corresponding to the (possibly nested) + dictionary of properties defined by the input statements used by + the image. Some example output for the 'list <wks file>' command: + + $ wic list test.ks + "part" : { + "mountpoint" : "/" + "fstype" : "ext3" + } + "part" : { + "mountpoint" : "/home" + "fstype" : "ext3" + "offset" : "10000" + } + "bootloader" : { + "type" : "efi" + } + . + . + . + + Each entry in the output consists of the name of the input element + e.g. "part", followed by the properties defined for that + element enclosed in braces. This information should provide + sufficient information to create a complete user interface with. + + The final form enumerates all the possible values that exist and + can be specified for any given OE kickstart (wks) property. If + the -o option is specified, the list of values for the given + property, in addition to being displayed, will be written to the + specified file as a JSON object. In this case, the object will + consist of the set of name:value pairs corresponding to the array + of property values associated with the property. + + $ wic list property part + ["mountpoint", "where the partition should be mounted"] + ["fstype", "filesytem type of the partition"] + ["ext3"] + ["ext4"] + ["btrfs"] + ["swap"] + ["offset", "offset of the partition within the image"] + +""" |