diff options
| author | Dave Cobbley <david.j.cobbley@linux.intel.com> | 2018-08-14 10:05:37 -0700 |
|---|---|---|
| committer | Brad Bishop <bradleyb@fuzziesquirrel.com> | 2018-08-22 21:26:31 -0400 |
| commit | eb8dc40360f0cfef56fb6947cc817a547d6d9bc6 (patch) | |
| tree | de291a73dc37168da6370e2cf16c347d1eba9df8 /poky/scripts/lib/wic | |
| parent | 9c3cf826d853102535ead04cebc2d6023eff3032 (diff) | |
| download | talos-openbmc-eb8dc40360f0cfef56fb6947cc817a547d6d9bc6.tar.gz talos-openbmc-eb8dc40360f0cfef56fb6947cc817a547d6d9bc6.zip | |
[Subtree] Removing import-layers directory
As part of the move to subtrees, need to bring all the import layers
content to the top level.
Change-Id: I4a163d10898cbc6e11c27f776f60e1a470049d8f
Signed-off-by: Dave Cobbley <david.j.cobbley@linux.intel.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Diffstat (limited to 'poky/scripts/lib/wic')
27 files changed, 5324 insertions, 0 deletions
diff --git a/poky/scripts/lib/wic/__init__.py b/poky/scripts/lib/wic/__init__.py new file mode 100644 index 000000000..85876b138 --- /dev/null +++ b/poky/scripts/lib/wic/__init__.py @@ -0,0 +1,20 @@ +#!/usr/bin/env python -tt +# +# Copyright (c) 2007 Red Hat, Inc. +# Copyright (c) 2011 Intel, Inc. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; version 2 of the License +# +# 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., 59 +# Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +class WicError(Exception): + pass diff --git a/poky/scripts/lib/wic/canned-wks/common.wks.inc b/poky/scripts/lib/wic/canned-wks/common.wks.inc new file mode 100644 index 000000000..89880b417 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/common.wks.inc @@ -0,0 +1,3 @@ +# This file is included into 3 canned wks files from this directory +part /boot --source bootimg-pcbios --ondisk sda --label boot --active --align 1024 +part / --source rootfs --use-uuid --fstype=ext4 --label platform --align 1024 diff --git a/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.cfg b/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.cfg new file mode 100644 index 000000000..c58e74a85 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.cfg @@ -0,0 +1,27 @@ +# This is an example configuration file for syslinux. +TIMEOUT 50 +ALLOWOPTIONS 1 +SERIAL 0 115200 +PROMPT 0 + +UI vesamenu.c32 +menu title Select boot options +menu tabmsg Press [Tab] to edit, [Return] to select + +DEFAULT Graphics console boot + +LABEL Graphics console boot +KERNEL /vmlinuz +APPEND label=boot rootwait + +LABEL Serial console boot +KERNEL /vmlinuz +APPEND label=boot rootwait console=ttyS0,115200 + +LABEL Graphics console install +KERNEL /vmlinuz +APPEND label=install rootwait + +LABEL Serial console install +KERNEL /vmlinuz +APPEND label=install rootwait console=ttyS0,115200 diff --git a/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.wks b/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.wks new file mode 100644 index 000000000..3529e05c8 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.wks @@ -0,0 +1,8 @@ +# short-description: Create a 'pcbios' direct disk image with custom bootloader config +# long-description: Creates a partitioned legacy BIOS disk image that the user +# can directly dd to boot media. The bootloader configuration source is a user file. + +include common.wks.inc + +bootloader --configfile="directdisk-bootloader-config.cfg" + diff --git a/poky/scripts/lib/wic/canned-wks/directdisk-gpt.wks b/poky/scripts/lib/wic/canned-wks/directdisk-gpt.wks new file mode 100644 index 000000000..8d7d8de6e --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/directdisk-gpt.wks @@ -0,0 +1,10 @@ +# short-description: Create a 'pcbios' direct disk image +# long-description: Creates a partitioned legacy BIOS disk image that the user +# can directly dd to boot media. + + +part /boot --source bootimg-pcbios --ondisk sda --label boot --active --align 1024 +part / --source rootfs --ondisk sda --fstype=ext4 --label platform --align 1024 --use-uuid + +bootloader --ptable gpt --timeout=0 --append="rootwait rootfstype=ext4 video=vesafb vga=0x318 console=tty0 console=ttyS0,115200n8" + diff --git a/poky/scripts/lib/wic/canned-wks/directdisk-multi-rootfs.wks b/poky/scripts/lib/wic/canned-wks/directdisk-multi-rootfs.wks new file mode 100644 index 000000000..f61d941d6 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/directdisk-multi-rootfs.wks @@ -0,0 +1,23 @@ +# short-description: Create multi rootfs image using rootfs plugin +# long-description: Creates a partitioned disk image with two rootfs partitions +# using rootfs plugin. +# +# Partitions can use either +# - indirect rootfs references to image recipe(s): +# wic create directdisk-multi-indirect-recipes -e core-image-minimal \ +# --rootfs-dir rootfs1=core-image-minimal +# --rootfs-dir rootfs2=core-image-minimal-dev +# +# - or paths to rootfs directories: +# wic create directdisk-multi-rootfs \ +# --rootfs-dir rootfs1=tmp/work/qemux86_64-poky-linux/core-image-minimal/1.0-r0/rootfs/ +# --rootfs-dir rootfs2=tmp/work/qemux86_64-poky-linux/core-image-minimal-dev/1.0-r0/rootfs/ +# +# - or any combinations of -r and --rootfs command line options + +part /boot --source bootimg-pcbios --ondisk sda --label boot --active --align 1024 +part / --source rootfs --rootfs-dir=rootfs1 --ondisk sda --fstype=ext4 --label platform --align 1024 +part /rescue --source rootfs --rootfs-dir=rootfs2 --ondisk sda --fstype=ext4 --label secondary --align 1024 + +bootloader --timeout=0 --append="rootwait rootfstype=ext4 video=vesafb vga=0x318 console=tty0 console=ttyS0,115200n8" + diff --git a/poky/scripts/lib/wic/canned-wks/directdisk.wks b/poky/scripts/lib/wic/canned-wks/directdisk.wks new file mode 100644 index 000000000..8c8e06b02 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/directdisk.wks @@ -0,0 +1,8 @@ +# short-description: Create a 'pcbios' direct disk image +# long-description: Creates a partitioned legacy BIOS disk image that the user +# can directly dd to boot media. + +include common.wks.inc + +bootloader --timeout=0 --append="rootwait rootfstype=ext4 video=vesafb vga=0x318 console=tty0 console=ttyS0,115200n8" + diff --git a/poky/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in b/poky/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in new file mode 100644 index 000000000..7300e65e3 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in @@ -0,0 +1,3 @@ +bootloader --ptable gpt +part /boot --source rootfs --rootfs-dir=${IMAGE_ROOTFS}/boot --fstype=vfat --label boot --active --align 1024 --use-uuid --overhead-factor 1.0 +part / --source rootfs --fstype=ext4 --label root --align 1024 --exclude-path boot/ diff --git a/poky/scripts/lib/wic/canned-wks/mkefidisk.wks b/poky/scripts/lib/wic/canned-wks/mkefidisk.wks new file mode 100644 index 000000000..9f534fe18 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/mkefidisk.wks @@ -0,0 +1,11 @@ +# short-description: Create an EFI disk image +# long-description: Creates a partitioned EFI disk image that the user +# can directly dd to boot media. + +part /boot --source bootimg-efi --sourceparams="loader=grub-efi" --ondisk sda --label msdos --active --align 1024 + +part / --source rootfs --ondisk sda --fstype=ext4 --label platform --align 1024 --use-uuid + +part swap --ondisk sda --size 44 --label swap1 --fstype=swap + +bootloader --ptable gpt --timeout=5 --append="rootfstype=ext4 console=ttyS0,115200 console=tty0" diff --git a/poky/scripts/lib/wic/canned-wks/mkhybridiso.wks b/poky/scripts/lib/wic/canned-wks/mkhybridiso.wks new file mode 100644 index 000000000..9d34e9b47 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/mkhybridiso.wks @@ -0,0 +1,7 @@ +# short-description: Create a hybrid ISO image +# long-description: Creates an EFI and legacy bootable hybrid ISO image +# which can be used on optical media as well as USB media. + +part /boot --source isoimage-isohybrid --sourceparams="loader=grub-efi,image_name=HYBRID_ISO_IMG" --ondisk cd --label HYBRIDISO --fstype=ext4 + +bootloader --timeout=15 --append="" diff --git a/poky/scripts/lib/wic/canned-wks/qemux86-directdisk.wks b/poky/scripts/lib/wic/canned-wks/qemux86-directdisk.wks new file mode 100644 index 000000000..1f8466af2 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/qemux86-directdisk.wks @@ -0,0 +1,8 @@ +# short-description: Create a qemu machine 'pcbios' direct disk image +# long-description: Creates a partitioned legacy BIOS disk image that the user +# can directly use to boot a qemu machine. + +include common.wks.inc + +bootloader --timeout=0 --append="vga=0 uvesafb.mode_option=640x480-32 rw mem=256M ip=192.168.7.2::192.168.7.1:255.255.255.0 oprofile.timer=1 rootfstype=ext4 " + diff --git a/poky/scripts/lib/wic/canned-wks/sdimage-bootpart.wks b/poky/scripts/lib/wic/canned-wks/sdimage-bootpart.wks new file mode 100644 index 000000000..7ffd632f4 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/sdimage-bootpart.wks @@ -0,0 +1,6 @@ +# short-description: Create SD card image with a boot partition +# long-description: Creates a partitioned SD card image. Boot files +# are located in the first vfat partition. + +part /boot --source bootimg-partition --ondisk mmcblk --fstype=vfat --label boot --active --align 4 --size 16 +part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 4 diff --git a/poky/scripts/lib/wic/canned-wks/systemd-bootdisk.wks b/poky/scripts/lib/wic/canned-wks/systemd-bootdisk.wks new file mode 100644 index 000000000..95d7b97a6 --- /dev/null +++ b/poky/scripts/lib/wic/canned-wks/systemd-bootdisk.wks @@ -0,0 +1,11 @@ +# short-description: Create an EFI disk image with systemd-boot +# long-description: Creates a partitioned EFI disk image that the user +# can directly dd to boot media. The selected bootloader is systemd-boot. + +part /boot --source bootimg-efi --sourceparams="loader=systemd-boot" --ondisk sda --label msdos --active --align 1024 --use-uuid + +part / --source rootfs --ondisk sda --fstype=ext4 --label platform --align 1024 --use-uuid + +part swap --ondisk sda --size 44 --label swap1 --fstype=swap --use-uuid + +bootloader --ptable gpt --timeout=5 --append="rootwait rootfstype=ext4 console=ttyS0,115200 console=tty0" diff --git a/poky/scripts/lib/wic/engine.py b/poky/scripts/lib/wic/engine.py new file mode 100644 index 000000000..edcfab39e --- /dev/null +++ b/poky/scripts/lib/wic/engine.py @@ -0,0 +1,565 @@ +# 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 logging +import os +import tempfile +import json +import subprocess + +from collections import namedtuple, OrderedDict +from distutils.spawn import find_executable + +from wic import WicError +from wic.filemap import sparse_copy +from wic.pluginbase import PluginMgr +from wic.misc import get_bitbake_var, exec_cmd + +logger = logging.getLogger('wic') + +def verify_build_env(): + """ + Verify that the build environment is sane. + + Returns True if it is, false otherwise + """ + if not os.environ.get("BUILDDIR"): + raise WicError("BUILDDIR not found, exiting. (Did you forget to source oe-init-build-env?)") + + return True + + +CANNED_IMAGE_DIR = "lib/wic/canned-wks" # relative to scripts +SCRIPTS_CANNED_IMAGE_DIR = "scripts/" + CANNED_IMAGE_DIR +WIC_DIR = "wic" + +def build_canned_image_list(path): + layers_path = get_bitbake_var("BBLAYERS") + canned_wks_layer_dirs = [] + + if layers_path is not None: + for layer_path in layers_path.split(): + for wks_path in (WIC_DIR, SCRIPTS_CANNED_IMAGE_DIR): + cpath = os.path.join(layer_path, wks_path) + if os.path.isdir(cpath): + canned_wks_layer_dirs.append(cpath) + + cpath = os.path.join(path, CANNED_IMAGE_DIR) + canned_wks_layer_dirs.append(cpath) + + 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 fname in files: + if fname.endswith("~") or fname.endswith("#"): + continue + if fname.endswith(".wks") and wks_file + ".wks" == fname: + fullpath = os.path.join(canned_wks_dir, fname) + 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 fname in files: + if fname.endswith("~") or fname.endswith("#"): + continue + if fname.endswith(".wks"): + fullpath = os.path.join(canned_wks_dir, fname) + with open(fullpath) as wks: + for line in wks: + desc = "" + idx = line.find("short-description:") + if idx != -1: + desc = line[idx + len("short-description:"):].strip() + break + basename = os.path.splitext(fname)[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. + """ + found = False + with open(fullpath) as wks: + for line in wks: + 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_plugins('source') + + for plugin in plugins: + print(" %s" % plugin) + + +def wic_create(wks_file, rootfs_dir, bootimg_dir, kernel_dir, + native_sysroot, options): + """ + 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 + image_output_dir - dirname to create for image + options - wic command line options (debug, bmap, etc) + + 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: + raise WicError("BUILDDIR not found, exiting. (Did you forget to source oe-init-build-env?)") + + if not os.path.exists(options.outdir): + os.makedirs(options.outdir) + + pname = 'direct' + plugin_class = PluginMgr.get_plugins('imager').get(pname) + if not plugin_class: + raise WicError('Unknown plugin: %s' % pname) + + plugin = plugin_class(wks_file, rootfs_dir, bootimg_dir, kernel_dir, + native_sysroot, oe_builddir, options) + + plugin.do_create() + + logger.info("The image(s) were created using OE kickstart file:\n %s", wks_file) + + +def wic_list(args, scripts_path): + """ + Print the list of images or source plugins. + """ + if args.list_type is None: + return False + + if args.list_type == "images": + + list_canned_images(scripts_path) + return True + elif args.list_type == "source-plugins": + list_source_plugins() + return True + elif len(args.help_for) == 1 and args.help_for[0] == 'help': + wks_file = args.list_type + fullpath = find_canned_image(scripts_path, wks_file) + if not fullpath: + raise WicError("No image named %s found, exiting. " + "(Use 'wic list images' to list available images, " + "or specify a fully-qualified OE kickstart (.wks) " + "filename)" % wks_file) + + list_canned_image_help(scripts_path, fullpath) + return True + + return False + + +class Disk: + def __init__(self, imagepath, native_sysroot, fstypes=('fat', 'ext')): + self.imagepath = imagepath + self.native_sysroot = native_sysroot + self.fstypes = fstypes + self._partitions = None + self._partimages = {} + self._lsector_size = None + self._psector_size = None + self._ptable_format = None + + # find parted + self.paths = "/bin:/usr/bin:/usr/sbin:/sbin/" + if native_sysroot: + for path in self.paths.split(':'): + self.paths = "%s%s:%s" % (native_sysroot, path, self.paths) + + self.parted = find_executable("parted", self.paths) + if not self.parted: + raise WicError("Can't find executable parted") + + self.partitions = self.get_partitions() + + def __del__(self): + for path in self._partimages.values(): + os.unlink(path) + + def get_partitions(self): + if self._partitions is None: + self._partitions = OrderedDict() + out = exec_cmd("%s -sm %s unit B print" % (self.parted, self.imagepath)) + parttype = namedtuple("Part", "pnum start end size fstype") + splitted = out.splitlines() + lsector_size, psector_size, self._ptable_format = splitted[1].split(":")[3:6] + self._lsector_size = int(lsector_size) + self._psector_size = int(psector_size) + for line in splitted[2:]: + pnum, start, end, size, fstype = line.split(':')[:5] + partition = parttype(int(pnum), int(start[:-1]), int(end[:-1]), + int(size[:-1]), fstype) + self._partitions[pnum] = partition + + return self._partitions + + def __getattr__(self, name): + """Get path to the executable in a lazy way.""" + if name in ("mdir", "mcopy", "mdel", "mdeltree", "sfdisk", "e2fsck", + "resize2fs", "mkswap", "mkdosfs", "debugfs"): + aname = "_%s" % name + if aname not in self.__dict__: + setattr(self, aname, find_executable(name, self.paths)) + if aname not in self.__dict__: + raise WicError("Can't find executable {}".format(name)) + return self.__dict__[aname] + return self.__dict__[name] + + def _get_part_image(self, pnum): + if pnum not in self.partitions: + raise WicError("Partition %s is not in the image") + part = self.partitions[pnum] + # check if fstype is supported + for fstype in self.fstypes: + if part.fstype.startswith(fstype): + break + else: + raise WicError("Not supported fstype: {}".format(part.fstype)) + if pnum not in self._partimages: + tmpf = tempfile.NamedTemporaryFile(prefix="wic-part") + dst_fname = tmpf.name + tmpf.close() + sparse_copy(self.imagepath, dst_fname, skip=part.start, length=part.size) + self._partimages[pnum] = dst_fname + + return self._partimages[pnum] + + def _put_part_image(self, pnum): + """Put partition image into partitioned image.""" + sparse_copy(self._partimages[pnum], self.imagepath, + seek=self.partitions[pnum].start) + + def dir(self, pnum, path): + if self.partitions[pnum].fstype.startswith('ext'): + return exec_cmd("{} {} -R 'ls -l {}'".format(self.debugfs, + self._get_part_image(pnum), + path), as_shell=True) + else: # fat + return exec_cmd("{} -i {} ::{}".format(self.mdir, + self._get_part_image(pnum), + path)) + + def copy(self, src, pnum, path): + """Copy partition image into wic image.""" + if self.partitions[pnum].fstype.startswith('ext'): + cmd = "echo -e 'cd {}\nwrite {} {}' | {} -w {}".\ + format(path, src, os.path.basename(src), + self.debugfs, self._get_part_image(pnum)) + else: # fat + cmd = "{} -i {} -snop {} ::{}".format(self.mcopy, + self._get_part_image(pnum), + src, path) + exec_cmd(cmd, as_shell=True) + self._put_part_image(pnum) + + def remove(self, pnum, path): + """Remove files/dirs from the partition.""" + partimg = self._get_part_image(pnum) + if self.partitions[pnum].fstype.startswith('ext'): + exec_cmd("{} {} -wR 'rm {}'".format(self.debugfs, + self._get_part_image(pnum), + path), as_shell=True) + else: # fat + cmd = "{} -i {} ::{}".format(self.mdel, partimg, path) + try: + exec_cmd(cmd) + except WicError as err: + if "not found" in str(err) or "non empty" in str(err): + # mdel outputs 'File ... not found' or 'directory .. non empty" + # try to use mdeltree as path could be a directory + cmd = "{} -i {} ::{}".format(self.mdeltree, + partimg, path) + exec_cmd(cmd) + else: + raise err + self._put_part_image(pnum) + + def write(self, target, expand): + """Write disk image to the media or file.""" + def write_sfdisk_script(outf, parts): + for key, val in parts['partitiontable'].items(): + if key in ("partitions", "device", "firstlba", "lastlba"): + continue + if key == "id": + key = "label-id" + outf.write("{}: {}\n".format(key, val)) + outf.write("\n") + for part in parts['partitiontable']['partitions']: + line = '' + for name in ('attrs', 'name', 'size', 'type', 'uuid'): + if name == 'size' and part['type'] == 'f': + # don't write size for extended partition + continue + val = part.get(name) + if val: + line += '{}={}, '.format(name, val) + if line: + line = line[:-2] # strip ', ' + if part.get('bootable'): + line += ' ,bootable' + outf.write("{}\n".format(line)) + outf.flush() + + def read_ptable(path): + out = exec_cmd("{} -dJ {}".format(self.sfdisk, path)) + return json.loads(out) + + def write_ptable(parts, target): + with tempfile.NamedTemporaryFile(prefix="wic-sfdisk-", mode='w') as outf: + write_sfdisk_script(outf, parts) + cmd = "{} --no-reread {} < {} 2>/dev/null".format(self.sfdisk, target, outf.name) + try: + subprocess.check_output(cmd, shell=True) + except subprocess.CalledProcessError as err: + raise WicError("Can't run '{}' command: {}".format(cmd, err)) + + if expand is None: + sparse_copy(self.imagepath, target) + else: + # copy first sectors that may contain bootloader + sparse_copy(self.imagepath, target, length=2048 * self._lsector_size) + + # copy source partition table to the target + parts = read_ptable(self.imagepath) + write_ptable(parts, target) + + # get size of unpartitioned space + free = None + for line in exec_cmd("{} -F {}".format(self.sfdisk, target)).splitlines(): + if line.startswith("Unpartitioned space ") and line.endswith("sectors"): + free = int(line.split()[-2]) + if free is None: + raise WicError("Can't get size of unpartitioned space") + + # calculate expanded partitions sizes + sizes = {} + for num, part in enumerate(parts['partitiontable']['partitions'], 1): + if num in expand: + if expand[num] != 0: # don't resize partition if size is set to 0 + sectors = expand[num] // self._lsector_size + free -= sectors - part['size'] + part['size'] = sectors + sizes[num] = sectors + elif part['type'] != 'f': + sizes[num] = -1 + + for num, part in enumerate(parts['partitiontable']['partitions'], 1): + if sizes.get(num) == -1: + part['size'] += free // len(sizes) + + # write resized partition table to the target + write_ptable(parts, target) + + # read resized partition table + parts = read_ptable(target) + + # copy partitions content + for num, part in enumerate(parts['partitiontable']['partitions'], 1): + pnum = str(num) + fstype = self.partitions[pnum].fstype + + # copy unchanged partition + if part['size'] == self.partitions[pnum].size // self._lsector_size: + logger.info("copying unchanged partition {}".format(pnum)) + sparse_copy(self._get_part_image(pnum), target, seek=part['start'] * self._lsector_size) + continue + + # resize or re-create partitions + if fstype.startswith('ext') or fstype.startswith('fat') or \ + fstype.startswith('linux-swap'): + + partfname = None + with tempfile.NamedTemporaryFile(prefix="wic-part{}-".format(pnum)) as partf: + partfname = partf.name + + if fstype.startswith('ext'): + logger.info("resizing ext partition {}".format(pnum)) + partimg = self._get_part_image(pnum) + sparse_copy(partimg, partfname) + exec_cmd("{} -pf {}".format(self.e2fsck, partfname)) + exec_cmd("{} {} {}s".format(\ + self.resize2fs, partfname, part['size'])) + elif fstype.startswith('fat'): + logger.info("copying content of the fat partition {}".format(pnum)) + with tempfile.TemporaryDirectory(prefix='wic-fatdir-') as tmpdir: + # copy content to the temporary directory + cmd = "{} -snompi {} :: {}".format(self.mcopy, + self._get_part_image(pnum), + tmpdir) + exec_cmd(cmd) + # create new msdos partition + label = part.get("name") + label_str = "-n {}".format(label) if label else '' + + cmd = "{} {} -C {} {}".format(self.mkdosfs, label_str, partfname, + part['size']) + exec_cmd(cmd) + # copy content from the temporary directory to the new partition + cmd = "{} -snompi {} {}/* ::".format(self.mcopy, partfname, tmpdir) + exec_cmd(cmd, as_shell=True) + elif fstype.startswith('linux-swap'): + logger.info("creating swap partition {}".format(pnum)) + label = part.get("name") + label_str = "-L {}".format(label) if label else '' + uuid = part.get("uuid") + uuid_str = "-U {}".format(uuid) if uuid else '' + with open(partfname, 'w') as sparse: + os.ftruncate(sparse.fileno(), part['size'] * self._lsector_size) + exec_cmd("{} {} {} {}".format(self.mkswap, label_str, uuid_str, partfname)) + sparse_copy(partfname, target, seek=part['start'] * self._lsector_size) + os.unlink(partfname) + elif part['type'] != 'f': + logger.warn("skipping partition {}: unsupported fstype {}".format(pnum, fstype)) + +def wic_ls(args, native_sysroot): + """List contents of partitioned image or vfat partition.""" + disk = Disk(args.path.image, native_sysroot) + if not args.path.part: + if disk.partitions: + print('Num Start End Size Fstype') + for part in disk.partitions.values(): + print("{:2d} {:12d} {:12d} {:12d} {}".format(\ + part.pnum, part.start, part.end, + part.size, part.fstype)) + else: + path = args.path.path or '/' + print(disk.dir(args.path.part, path)) + +def wic_cp(args, native_sysroot): + """ + Copy local file or directory to the vfat partition of + partitioned image. + """ + disk = Disk(args.dest.image, native_sysroot) + disk.copy(args.src, args.dest.part, args.dest.path) + +def wic_rm(args, native_sysroot): + """ + Remove files or directories from the vfat partition of + partitioned image. + """ + disk = Disk(args.path.image, native_sysroot) + disk.remove(args.path.part, args.path.path) + +def wic_write(args, native_sysroot): + """ + Write image to a target device. + """ + disk = Disk(args.image, native_sysroot, ('fat', 'ext', 'swap')) + disk.write(args.target, args.expand) + +def find_canned(scripts_path, file_name): + """ + Find a file either by its path or by name in the canned files dir. + + Return None if not found + """ + if os.path.exists(file_name): + return file_name + + 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 fname in files: + if fname == file_name: + fullpath = os.path.join(canned_wks_dir, fname) + return fullpath + +def get_custom_config(boot_file): + """ + Get the custom configuration to be used for the bootloader. + + Return None if the file can't be found. + """ + # Get the scripts path of poky + scripts_path = os.path.abspath("%s/../.." % os.path.dirname(__file__)) + + cfg_file = find_canned(scripts_path, boot_file) + if cfg_file: + with open(cfg_file, "r") as f: + config = f.read() + return config diff --git a/poky/scripts/lib/wic/filemap.py b/poky/scripts/lib/wic/filemap.py new file mode 100644 index 000000000..a72fa09ef --- /dev/null +++ b/poky/scripts/lib/wic/filemap.py @@ -0,0 +1,600 @@ +# Copyright (c) 2012 Intel, Inc. +# +# 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. + +""" +This module implements python implements a way to get file block. Two methods +are supported - the FIEMAP ioctl and the 'SEEK_HOLE / SEEK_DATA' features of +the file seek syscall. The former is implemented by the 'FilemapFiemap' class, +the latter is implemented by the 'FilemapSeek' class. Both classes provide the +same API. The 'filemap' function automatically selects which class can be used +and returns an instance of the class. +""" + +# Disable the following pylint recommendations: +# * Too many instance attributes (R0902) +# pylint: disable=R0902 + +import os +import struct +import array +import fcntl +import tempfile +import logging + +def get_block_size(file_obj): + """ + Returns block size for file object 'file_obj'. Errors are indicated by the + 'IOError' exception. + """ + # Get the block size of the host file-system for the image file by calling + # the FIGETBSZ ioctl (number 2). + binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0)) + bsize = struct.unpack('I', binary_data)[0] + if not bsize: + import os + stat = os.fstat(file_obj.fileno()) + if hasattr(stat, 'st_blksize'): + bsize = stat.st_blksize + else: + raise IOError("Unable to determine block size") + return bsize + +class ErrorNotSupp(Exception): + """ + An exception of this type is raised when the 'FIEMAP' or 'SEEK_HOLE' feature + is not supported either by the kernel or the file-system. + """ + pass + +class Error(Exception): + """A class for all the other exceptions raised by this module.""" + pass + + +class _FilemapBase(object): + """ + This is a base class for a couple of other classes in this module. This + class simply performs the common parts of the initialization process: opens + the image file, gets its size, etc. The 'log' parameter is the logger object + to use for printing messages. + """ + + def __init__(self, image, log=None): + """ + Initialize a class instance. The 'image' argument is full path to the + file or file object to operate on. + """ + + self._log = log + if self._log is None: + self._log = logging.getLogger(__name__) + + self._f_image_needs_close = False + + if hasattr(image, "fileno"): + self._f_image = image + self._image_path = image.name + else: + self._image_path = image + self._open_image_file() + + try: + self.image_size = os.fstat(self._f_image.fileno()).st_size + except IOError as err: + raise Error("cannot get information about file '%s': %s" + % (self._f_image.name, err)) + + try: + self.block_size = get_block_size(self._f_image) + except IOError as err: + raise Error("cannot get block size for '%s': %s" + % (self._image_path, err)) + + self.blocks_cnt = self.image_size + self.block_size - 1 + self.blocks_cnt //= self.block_size + + try: + self._f_image.flush() + except IOError as err: + raise Error("cannot flush image file '%s': %s" + % (self._image_path, err)) + + try: + os.fsync(self._f_image.fileno()), + except OSError as err: + raise Error("cannot synchronize image file '%s': %s " + % (self._image_path, err.strerror)) + + self._log.debug("opened image \"%s\"" % self._image_path) + self._log.debug("block size %d, blocks count %d, image size %d" + % (self.block_size, self.blocks_cnt, self.image_size)) + + def __del__(self): + """The class destructor which just closes the image file.""" + if self._f_image_needs_close: + self._f_image.close() + + def _open_image_file(self): + """Open the image file.""" + try: + self._f_image = open(self._image_path, 'rb') + except IOError as err: + raise Error("cannot open image file '%s': %s" + % (self._image_path, err)) + + self._f_image_needs_close = True + + def block_is_mapped(self, block): # pylint: disable=W0613,R0201 + """ + This method has has to be implemented by child classes. It returns + 'True' if block number 'block' of the image file is mapped and 'False' + otherwise. + """ + + raise Error("the method is not implemented") + + def block_is_unmapped(self, block): # pylint: disable=W0613,R0201 + """ + This method has has to be implemented by child classes. It returns + 'True' if block number 'block' of the image file is not mapped (hole) + and 'False' otherwise. + """ + + raise Error("the method is not implemented") + + def get_mapped_ranges(self, start, count): # pylint: disable=W0613,R0201 + """ + This method has has to be implemented by child classes. This is a + generator which yields ranges of mapped blocks in the file. The ranges + are tuples of 2 elements: [first, last], where 'first' is the first + mapped block and 'last' is the last mapped block. + + The ranges are yielded for the area of the file of size 'count' blocks, + starting from block 'start'. + """ + + raise Error("the method is not implemented") + + def get_unmapped_ranges(self, start, count): # pylint: disable=W0613,R0201 + """ + This method has has to be implemented by child classes. Just like + 'get_mapped_ranges()', but yields unmapped block ranges instead + (holes). + """ + + raise Error("the method is not implemented") + + +# The 'SEEK_HOLE' and 'SEEK_DATA' options of the file seek system call +_SEEK_DATA = 3 +_SEEK_HOLE = 4 + +def _lseek(file_obj, offset, whence): + """This is a helper function which invokes 'os.lseek' for file object + 'file_obj' and with specified 'offset' and 'whence'. The 'whence' + argument is supposed to be either '_SEEK_DATA' or '_SEEK_HOLE'. When + there is no more data or hole starting from 'offset', this function + returns '-1'. Otherwise the data or hole position is returned.""" + + try: + return os.lseek(file_obj.fileno(), offset, whence) + except OSError as err: + # The 'lseek' system call returns the ENXIO if there is no data or + # hole starting from the specified offset. + if err.errno == os.errno.ENXIO: + return -1 + elif err.errno == os.errno.EINVAL: + raise ErrorNotSupp("the kernel or file-system does not support " + "\"SEEK_HOLE\" and \"SEEK_DATA\"") + else: + raise + +class FilemapSeek(_FilemapBase): + """ + This class uses the 'SEEK_HOLE' and 'SEEK_DATA' to find file block mapping. + Unfortunately, the current implementation requires the caller to have write + access to the image file. + """ + + def __init__(self, image, log=None): + """Refer the '_FilemapBase' class for the documentation.""" + + # Call the base class constructor first + _FilemapBase.__init__(self, image, log) + self._log.debug("FilemapSeek: initializing") + + self._probe_seek_hole() + + def _probe_seek_hole(self): + """ + Check whether the system implements 'SEEK_HOLE' and 'SEEK_DATA'. + Unfortunately, there seems to be no clean way for detecting this, + because often the system just fakes them by just assuming that all + files are fully mapped, so 'SEEK_HOLE' always returns EOF and + 'SEEK_DATA' always returns the requested offset. + + I could not invent a better way of detecting the fake 'SEEK_HOLE' + implementation than just to create a temporary file in the same + directory where the image file resides. It would be nice to change this + to something better. + """ + + directory = os.path.dirname(self._image_path) + + try: + tmp_obj = tempfile.TemporaryFile("w+", dir=directory) + except IOError as err: + raise ErrorNotSupp("cannot create a temporary in \"%s\": %s" \ + % (directory, err)) + + try: + os.ftruncate(tmp_obj.fileno(), self.block_size) + except OSError as err: + raise ErrorNotSupp("cannot truncate temporary file in \"%s\": %s" + % (directory, err)) + + offs = _lseek(tmp_obj, 0, _SEEK_HOLE) + if offs != 0: + # We are dealing with the stub 'SEEK_HOLE' implementation which + # always returns EOF. + self._log.debug("lseek(0, SEEK_HOLE) returned %d" % offs) + raise ErrorNotSupp("the file-system does not support " + "\"SEEK_HOLE\" and \"SEEK_DATA\" but only " + "provides a stub implementation") + + tmp_obj.close() + + def block_is_mapped(self, block): + """Refer the '_FilemapBase' class for the documentation.""" + offs = _lseek(self._f_image, block * self.block_size, _SEEK_DATA) + if offs == -1: + result = False + else: + result = (offs // self.block_size == block) + + self._log.debug("FilemapSeek: block_is_mapped(%d) returns %s" + % (block, result)) + return result + + def block_is_unmapped(self, block): + """Refer the '_FilemapBase' class for the documentation.""" + return not self.block_is_mapped(block) + + def _get_ranges(self, start, count, whence1, whence2): + """ + This function implements 'get_mapped_ranges()' and + 'get_unmapped_ranges()' depending on what is passed in the 'whence1' + and 'whence2' arguments. + """ + + assert whence1 != whence2 + end = start * self.block_size + limit = end + count * self.block_size + + while True: + start = _lseek(self._f_image, end, whence1) + if start == -1 or start >= limit or start == self.image_size: + break + + end = _lseek(self._f_image, start, whence2) + if end == -1 or end == self.image_size: + end = self.blocks_cnt * self.block_size + if end > limit: + end = limit + + start_blk = start // self.block_size + end_blk = end // self.block_size - 1 + self._log.debug("FilemapSeek: yielding range (%d, %d)" + % (start_blk, end_blk)) + yield (start_blk, end_blk) + + def get_mapped_ranges(self, start, count): + """Refer the '_FilemapBase' class for the documentation.""" + self._log.debug("FilemapSeek: get_mapped_ranges(%d, %d(%d))" + % (start, count, start + count - 1)) + return self._get_ranges(start, count, _SEEK_DATA, _SEEK_HOLE) + + def get_unmapped_ranges(self, start, count): + """Refer the '_FilemapBase' class for the documentation.""" + self._log.debug("FilemapSeek: get_unmapped_ranges(%d, %d(%d))" + % (start, count, start + count - 1)) + return self._get_ranges(start, count, _SEEK_HOLE, _SEEK_DATA) + + +# Below goes the FIEMAP ioctl implementation, which is not very readable +# because it deals with the rather complex FIEMAP ioctl. To understand the +# code, you need to know the FIEMAP interface, which is documented in the +# "Documentation/filesystems/fiemap.txt" file in the Linux kernel sources. + +# Format string for 'struct fiemap' +_FIEMAP_FORMAT = "=QQLLLL" +# sizeof(struct fiemap) +_FIEMAP_SIZE = struct.calcsize(_FIEMAP_FORMAT) +# Format string for 'struct fiemap_extent' +_FIEMAP_EXTENT_FORMAT = "=QQQQQLLLL" +# sizeof(struct fiemap_extent) +_FIEMAP_EXTENT_SIZE = struct.calcsize(_FIEMAP_EXTENT_FORMAT) +# The FIEMAP ioctl number +_FIEMAP_IOCTL = 0xC020660B +# This FIEMAP ioctl flag which instructs the kernel to sync the file before +# reading the block map +_FIEMAP_FLAG_SYNC = 0x00000001 +# Size of the buffer for 'struct fiemap_extent' elements which will be used +# when invoking the FIEMAP ioctl. The larger is the buffer, the less times the +# FIEMAP ioctl will be invoked. +_FIEMAP_BUFFER_SIZE = 256 * 1024 + +class FilemapFiemap(_FilemapBase): + """ + This class provides API to the FIEMAP ioctl. Namely, it allows to iterate + over all mapped blocks and over all holes. + + This class synchronizes the image file every time it invokes the FIEMAP + ioctl in order to work-around early FIEMAP implementation kernel bugs. + """ + + def __init__(self, image, log=None): + """ + Initialize a class instance. The 'image' argument is full the file + object to operate on. + """ + + # Call the base class constructor first + _FilemapBase.__init__(self, image, log) + self._log.debug("FilemapFiemap: initializing") + + self._buf_size = _FIEMAP_BUFFER_SIZE + + # Calculate how many 'struct fiemap_extent' elements fit the buffer + self._buf_size -= _FIEMAP_SIZE + self._fiemap_extent_cnt = self._buf_size // _FIEMAP_EXTENT_SIZE + assert self._fiemap_extent_cnt > 0 + self._buf_size = self._fiemap_extent_cnt * _FIEMAP_EXTENT_SIZE + self._buf_size += _FIEMAP_SIZE + + # Allocate a mutable buffer for the FIEMAP ioctl + self._buf = array.array('B', [0] * self._buf_size) + + # Check if the FIEMAP ioctl is supported + self.block_is_mapped(0) + + def _invoke_fiemap(self, block, count): + """ + Invoke the FIEMAP ioctl for 'count' blocks of the file starting from + block number 'block'. + + The full result of the operation is stored in 'self._buf' on exit. + Returns the unpacked 'struct fiemap' data structure in form of a python + list (just like 'struct.upack()'). + """ + + if self.blocks_cnt != 0 and (block < 0 or block >= self.blocks_cnt): + raise Error("bad block number %d, should be within [0, %d]" + % (block, self.blocks_cnt)) + + # Initialize the 'struct fiemap' part of the buffer. We use the + # '_FIEMAP_FLAG_SYNC' flag in order to make sure the file is + # synchronized. The reason for this is that early FIEMAP + # implementations had many bugs related to cached dirty data, and + # synchronizing the file is a necessary work-around. + struct.pack_into(_FIEMAP_FORMAT, self._buf, 0, block * self.block_size, + count * self.block_size, _FIEMAP_FLAG_SYNC, 0, + self._fiemap_extent_cnt, 0) + + try: + fcntl.ioctl(self._f_image, _FIEMAP_IOCTL, self._buf, 1) + except IOError as err: + # Note, the FIEMAP ioctl is supported by the Linux kernel starting + # from version 2.6.28 (year 2008). + if err.errno == os.errno.EOPNOTSUPP: + errstr = "FilemapFiemap: the FIEMAP ioctl is not supported " \ + "by the file-system" + self._log.debug(errstr) + raise ErrorNotSupp(errstr) + if err.errno == os.errno.ENOTTY: + errstr = "FilemapFiemap: the FIEMAP ioctl is not supported " \ + "by the kernel" + self._log.debug(errstr) + raise ErrorNotSupp(errstr) + raise Error("the FIEMAP ioctl failed for '%s': %s" + % (self._image_path, err)) + + return struct.unpack(_FIEMAP_FORMAT, self._buf[:_FIEMAP_SIZE]) + + def block_is_mapped(self, block): + """Refer the '_FilemapBase' class for the documentation.""" + struct_fiemap = self._invoke_fiemap(block, 1) + + # The 3rd element of 'struct_fiemap' is the 'fm_mapped_extents' field. + # If it contains zero, the block is not mapped, otherwise it is + # mapped. + result = bool(struct_fiemap[3]) + self._log.debug("FilemapFiemap: block_is_mapped(%d) returns %s" + % (block, result)) + return result + + def block_is_unmapped(self, block): + """Refer the '_FilemapBase' class for the documentation.""" + return not self.block_is_mapped(block) + + def _unpack_fiemap_extent(self, index): + """ + Unpack a 'struct fiemap_extent' structure object number 'index' from + the internal 'self._buf' buffer. + """ + + offset = _FIEMAP_SIZE + _FIEMAP_EXTENT_SIZE * index + return struct.unpack(_FIEMAP_EXTENT_FORMAT, + self._buf[offset : offset + _FIEMAP_EXTENT_SIZE]) + + def _do_get_mapped_ranges(self, start, count): + """ + Implements most the functionality for the 'get_mapped_ranges()' + generator: invokes the FIEMAP ioctl, walks through the mapped extents + and yields mapped block ranges. However, the ranges may be consecutive + (e.g., (1, 100), (100, 200)) and 'get_mapped_ranges()' simply merges + them. + """ + + block = start + while block < start + count: + struct_fiemap = self._invoke_fiemap(block, count) + + mapped_extents = struct_fiemap[3] + if mapped_extents == 0: + # No more mapped blocks + return + + extent = 0 + while extent < mapped_extents: + fiemap_extent = self._unpack_fiemap_extent(extent) + + # Start of the extent + extent_start = fiemap_extent[0] + # Starting block number of the extent + extent_block = extent_start // self.block_size + # Length of the extent + extent_len = fiemap_extent[2] + # Count of blocks in the extent + extent_count = extent_len // self.block_size + + # Extent length and offset have to be block-aligned + assert extent_start % self.block_size == 0 + assert extent_len % self.block_size == 0 + + if extent_block > start + count - 1: + return + + first = max(extent_block, block) + last = min(extent_block + extent_count, start + count) - 1 + yield (first, last) + + extent += 1 + + block = extent_block + extent_count + + def get_mapped_ranges(self, start, count): + """Refer the '_FilemapBase' class for the documentation.""" + self._log.debug("FilemapFiemap: get_mapped_ranges(%d, %d(%d))" + % (start, count, start + count - 1)) + iterator = self._do_get_mapped_ranges(start, count) + first_prev, last_prev = next(iterator) + + for first, last in iterator: + if last_prev == first - 1: + last_prev = last + else: + self._log.debug("FilemapFiemap: yielding range (%d, %d)" + % (first_prev, last_prev)) + yield (first_prev, last_prev) + first_prev, last_prev = first, last + + self._log.debug("FilemapFiemap: yielding range (%d, %d)" + % (first_prev, last_prev)) + yield (first_prev, last_prev) + + def get_unmapped_ranges(self, start, count): + """Refer the '_FilemapBase' class for the documentation.""" + self._log.debug("FilemapFiemap: get_unmapped_ranges(%d, %d(%d))" + % (start, count, start + count - 1)) + hole_first = start + for first, last in self._do_get_mapped_ranges(start, count): + if first > hole_first: + self._log.debug("FilemapFiemap: yielding range (%d, %d)" + % (hole_first, first - 1)) + yield (hole_first, first - 1) + + hole_first = last + 1 + + if hole_first < start + count: + self._log.debug("FilemapFiemap: yielding range (%d, %d)" + % (hole_first, start + count - 1)) + yield (hole_first, start + count - 1) + +def filemap(image, log=None): + """ + Create and return an instance of a Filemap class - 'FilemapFiemap' or + 'FilemapSeek', depending on what the system we run on supports. If the + FIEMAP ioctl is supported, an instance of the 'FilemapFiemap' class is + returned. Otherwise, if 'SEEK_HOLE' is supported an instance of the + 'FilemapSeek' class is returned. If none of these are supported, the + function generates an 'Error' type exception. + """ + + try: + return FilemapFiemap(image, log) + except ErrorNotSupp: + return FilemapSeek(image, log) + +def sparse_copy(src_fname, dst_fname, skip=0, seek=0, + length=0, api=None): + """ + Efficiently copy sparse file to or into another file. + + src_fname: path to source file + dst_fname: path to destination file + skip: skip N bytes at thestart of src + seek: seek N bytes from the start of dst + length: read N bytes from src and write them to dst + api: FilemapFiemap or FilemapSeek object + """ + if not api: + api = filemap + fmap = api(src_fname) + try: + dst_file = open(dst_fname, 'r+b') + except IOError: + dst_file = open(dst_fname, 'wb') + if length: + dst_size = length + seek + else: + dst_size = os.path.getsize(src_fname) + seek - skip + dst_file.truncate(dst_size) + + written = 0 + for first, last in fmap.get_mapped_ranges(0, fmap.blocks_cnt): + start = first * fmap.block_size + end = (last + 1) * fmap.block_size + + if skip >= end: + continue + + if start < skip < end: + start = skip + + fmap._f_image.seek(start, os.SEEK_SET) + + written += start - skip - written + if length and written >= length: + dst_file.seek(seek + length, os.SEEK_SET) + dst_file.close() + return + + dst_file.seek(seek + start - skip, os.SEEK_SET) + + chunk_size = 1024 * 1024 + to_read = end - start + read = 0 + + while read < to_read: + if read + chunk_size > to_read: + chunk_size = to_read - read + size = chunk_size + if length and written + size > length: + size = length - written + chunk = fmap._f_image.read(size) + dst_file.write(chunk) + read += size + written += size + if written == length: + dst_file.close() + return + dst_file.close() diff --git a/poky/scripts/lib/wic/help.py b/poky/scripts/lib/wic/help.py new file mode 100644 index 000000000..842b868a5 --- /dev/null +++ b/poky/scripts/lib/wic/help.py @@ -0,0 +1,1055 @@ +# 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 + +from wic.pluginbase import PluginMgr, PLUGIN_TYPES + +logger = logging.getLogger('wic') + +def subcommand_error(args): + logger.info("invalid subcommand %s", args[0]) + + +def display_help(subcommand, subcommands): + """ + Display help for subcommand. + """ + if subcommand not in subcommands: + return False + + hlp = subcommands.get(subcommand, subcommand_error)[2] + if callable(hlp): + hlp = hlp() + pager = subprocess.Popen('less', stdin=subprocess.PIPE) + pager.communicate(hlp.encode('utf-8')) + + return True + + +def wic_help(args, usage_str, subcommands): + """ + Subcommand help dispatcher. + """ + if args.help_topic == None or not display_help(args.help_topic, subcommands): + print(usage_str) + + +def get_wic_plugins_help(): + """ + Combine wic_plugins_help with the help for every known + source plugin. + """ + result = wic_plugins_help + for plugin_type in PLUGIN_TYPES: + result += '\n\n%s PLUGINS\n\n' % plugin_type.upper() + for name, plugin in PluginMgr.get_plugins(plugin_type).items(): + result += "\n %s plugin:\n" % name + if plugin.__doc__: + result += plugin.__doc__ + else: + result += "\n %s is missing docstring\n" % plugin + return result + + +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.command: + logger.error("No subcommand specified, exiting") + parser.print_help() + return 1 + elif args.command == "help": + wic_help(args, main_command_usage, subcommands) + elif args.command not in subcommands: + logger.error("Unsupported subcommand %s, exiting\n", args.command) + parser.print_help() + return 1 + else: + subcmd = subcommands.get(args.command, subcommand_error) + usage = subcmd[1] + subcmd[0](args, usage) + + +## +# wic help and usage strings +## + +wic_usage = """ + + Create a customized OpenEmbedded image + + usage: wic [--version] | [--help] | [COMMAND [ARGS]] + + Current 'wic' commands are: + help Show help for command or one of the topics (see below) + create Create a new OpenEmbedded image + list List available canned images and source plugins + + Help topics: + overview wic overview - General overview of wic + plugins wic plugins - Overview and API + kickstart wic kickstart - wic kickstart reference +""" + +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>] + [-e | --image-name] [-s, --skip-build-check] [-D, --debug] + [-r, --rootfs-dir] [-b, --bootimg-dir] + [-k, --kernel-dir] [-n, --native-sysroot] [-f, --build-rootfs] + [-c, --compress-with] [-m, --bmap] + + 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>] + [-e | --image-name] [-s, --skip-build-check] [-D, --debug] + [-r, --rootfs-dir] [-b, --bootimg-dir] + [-k, --kernel-dir] [-n, --native-sysroot] [-f, --build-rootfs] + [-c, --compress-with] [-m, --bmap] [--no-fstab-update] + +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 'wic' 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 -f option is used to build rootfs by running "bitbake <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. + + The -D option is used to display debug information detailing + exactly what happens behind the scenes when a create request is + fulfilled (or not, as the case may be). It enumerates and + displays the command sequence used, and should be included in any + bug report describing unexpected results. + + 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: empty (plugin-specific handlers must determine this) + + 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. + + The -c option is used to specify compressor utility to compress + an image. gzip, bzip2 and xz compressors are supported. + + The -m option is used to produce .bmap file for the image. This file + can be used to flash image using bmaptool utility. + + The --no-fstab-update option is used to doesn't change fstab file. When + using this option the final fstab file will be same that in rootfs and + wic doesn't update file, e.g adding a new mount point. User can control + the fstab file content in base-files recipe. +""" + +wic_list_usage = """ + + List available OpenEmbedded images and source plugins + + usage: wic list images + wic list <image> help + wic list source-plugins + + This command enumerates the set of available canned images as well as + help for those images. It also can be used to list of available source + plugins. + + 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 available --sources (source + plugins). + + See 'wic help list' for more details. +""" + +wic_list_help = """ + +NAME + wic list - List available OpenEmbedded images and source plugins + +SYNOPSIS + wic list images + wic list <image> help + wic list source-plugins + +DESCRIPTION + This command enumerates the set of available canned images as well + as help for those images. It also can be used to list available + source plugins. + + 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/wic/canned-wks directory). + + The second form lists the detailed help information for a specific + 'canned' image. + + The third form enumerates all the available --sources (source + plugins). The contents of a given partition are driven by code + defined in 'source plugins'. Users specify a specific plugin via + the --source parameter of the partition .wks command. Normally + this is the 'rootfs' plugin but can be any of the more specialized + sources listed by the 'list source-plugins' command. Users can + also add their own source plugins - see 'wic help plugins' for + details. +""" + +wic_ls_usage = """ + + List content of a partitioned image + + usage: wic ls <image>[:<partition>[<path>]] [--native-sysroot <path>] + + This command outputs either list of image partitions or directory contents + of vfat and ext* partitions. + + See 'wic help ls' for more detailed instructions. + +""" + +wic_ls_help = """ + +NAME + wic ls - List contents of partitioned image or partition + +SYNOPSIS + wic ls <image> + wic ls <image>:<vfat or ext* partition> + wic ls <image>:<vfat or ext* partition><path> + wic ls <image>:<vfat or ext* partition><path> --native-sysroot <path> + +DESCRIPTION + This command lists either partitions of the image or directory contents + of vfat or ext* partitions. + + The first form it lists partitions of the image. + For example: + $ wic ls tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic + Num Start End Size Fstype + 1 1048576 24438783 23390208 fat16 + 2 25165824 50315263 25149440 ext4 + + Second and third form list directory content of the partition: + $ wic ls tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1 + Volume in drive : is boot + Volume Serial Number is 2DF2-5F02 + Directory for ::/ + + efi <DIR> 2017-05-11 10:54 + startup nsh 26 2017-05-11 10:54 + vmlinuz 6922288 2017-05-11 10:54 + 3 files 6 922 314 bytes + 15 818 752 bytes free + + + $ wic ls tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1/EFI/boot/ + Volume in drive : is boot + Volume Serial Number is 2DF2-5F02 + Directory for ::/EFI/boot + + . <DIR> 2017-05-11 10:54 + .. <DIR> 2017-05-11 10:54 + grub cfg 679 2017-05-11 10:54 + bootx64 efi 571392 2017-05-11 10:54 + 4 files 572 071 bytes + 15 818 752 bytes free + + The -n option is used to specify the path to the native sysroot + containing the tools(parted and mtools) to use. + +""" + +wic_cp_usage = """ + + Copy files and directories to the vfat or ext* partition + + usage: wic cp <src> <image>:<partition>[<path>] [--native-sysroot <path>] + + This command copies local files or directories to the vfat or ext* partitions +of partitioned image. + + See 'wic help cp' for more detailed instructions. + +""" + +wic_cp_help = """ + +NAME + wic cp - copy files and directories to the vfat or ext* partitions + +SYNOPSIS + wic cp <src> <image>:<partition> + wic cp <src> <image>:<partition><path> + wic cp <src> <image>:<partition><path> --native-sysroot <path> + +DESCRIPTION + This command copies files and directories to the vfat or ext* partition of + the partitioned image. + + The first form of it copies file or directory to the root directory of + the partition: + $ wic cp test.wks tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1 + $ wic ls tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1 + Volume in drive : is boot + Volume Serial Number is DB4C-FD4C + Directory for ::/ + + efi <DIR> 2017-05-24 18:15 + loader <DIR> 2017-05-24 18:15 + startup nsh 26 2017-05-24 18:15 + vmlinuz 6926384 2017-05-24 18:15 + test wks 628 2017-05-24 21:22 + 5 files 6 927 038 bytes + 15 677 440 bytes free + + The second form of the command copies file or directory to the specified directory + on the partition: + $ wic cp test tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1/efi/ + $ wic ls tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1/efi/ + Volume in drive : is boot + Volume Serial Number is DB4C-FD4C + Directory for ::/efi + + . <DIR> 2017-05-24 18:15 + .. <DIR> 2017-05-24 18:15 + boot <DIR> 2017-05-24 18:15 + test <DIR> 2017-05-24 21:27 + 4 files 0 bytes + 15 675 392 bytes free + + The -n option is used to specify the path to the native sysroot + containing the tools(parted and mtools) to use. +""" + +wic_rm_usage = """ + + Remove files or directories from the vfat or ext* partitions + + usage: wic rm <image>:<partition><path> [--native-sysroot <path>] + + This command removes files or directories from the vfat or ext* partitions of + the partitioned image. + + See 'wic help rm' for more detailed instructions. + +""" + +wic_rm_help = """ + +NAME + wic rm - remove files or directories from the vfat or ext* partitions + +SYNOPSIS + wic rm <src> <image>:<partition><path> + wic rm <src> <image>:<partition><path> --native-sysroot <path> + +DESCRIPTION + This command removes files or directories from the vfat or ext* partition of the + partitioned image: + + $ wic ls ./tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1 + Volume in drive : is boot + Volume Serial Number is 11D0-DE21 + Directory for ::/ + + libcom32 c32 186500 2017-06-02 15:15 + libutil c32 24148 2017-06-02 15:15 + syslinux cfg 209 2017-06-02 15:15 + vesamenu c32 27104 2017-06-02 15:15 + vmlinuz 6926384 2017-06-02 15:15 + 5 files 7 164 345 bytes + 16 582 656 bytes free + + $ wic rm ./tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1/libutil.c32 + + $ wic ls ./tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic:1 + Volume in drive : is boot + Volume Serial Number is 11D0-DE21 + Directory for ::/ + + libcom32 c32 186500 2017-06-02 15:15 + syslinux cfg 209 2017-06-02 15:15 + vesamenu c32 27104 2017-06-02 15:15 + vmlinuz 6926384 2017-06-02 15:15 + 4 files 7 140 197 bytes + 16 607 232 bytes free + + The -n option is used to specify the path to the native sysroot + containing the tools(parted and mtools) to use. +""" + +wic_write_usage = """ + + Write image to a device + + usage: wic write <image> <target device> [--expand [rules]] [--native-sysroot <path>] + + This command writes partitioned image to a target device (USB stick, SD card etc). + + See 'wic help write' for more detailed instructions. + +""" + +wic_write_help = """ + +NAME + wic write - write an image to a device + +SYNOPSIS + wic write <image> <target> + wic write <image> <target> --expand auto + wic write <image> <target> --expand 1:100M-2:300M + wic write <image> <target> --native-sysroot <path> + +DESCRIPTION + This command writes an image to a target device (USB stick, SD card etc) + + $ wic write ./tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.wic /dev/sdb + + The --expand option is used to resize image partitions. + --expand auto expands partitions to occupy all free space available on the target device. + It's also possible to specify expansion rules in a format + <partition>:<size>[-<partition>:<size>...] for one or more partitions. + Specifying size 0 will keep partition unmodified. + Note: Resizing boot partition can result in non-bootable image for non-EFI images. It is + recommended to use size 0 for boot partition to keep image bootable. + + The --native-sysroot option is used to specify the path to the native sysroot + containing the tools(parted, resize2fs) to use. +""" + +wic_plugins_help = """ + +NAME + wic plugins - Overview and API + +DESCRIPTION + plugins allow wic functionality to be extended and specialized by + users. This section documents the plugin interface, which is + currently restricted to 'source' plugins. + + 'Source' plugins provide a mechanism to customize various aspects + of the image generation process in wic, mainly the contents of + partitions. + + Source plugins provide a mechanism for mapping values specified in + .wks files using the --source keyword to a particular plugin + implementation that populates a corresponding partition. + + A source plugin is created as a subclass of SourcePlugin (see + scripts/lib/wic/pluginbase.py) and the plugin file containing it + is added to scripts/lib/wic/plugins/source/ to make the plugin + implementation available to the wic implementation. + + Source plugins can also be implemented and added by external + layers - any plugins found in a scripts/lib/wic/plugins/source/ + directory in an external layer will also be made available. + + When the wic implementation needs to invoke a partition-specific + implementation, it looks for the plugin that has the same name as + the --source param given to that partition. For example, if the + partition is set up like this: + + part /boot --source bootimg-pcbios ... + + then the methods defined as class members of the plugin having the + matching bootimg-pcbios .name class member would be used. + + To be more concrete, here's the plugin definition that would match + a '--source bootimg-pcbios' usage, along with an example method + that would be called by the wic implementation when it needed to + invoke an implementation-specific partition-preparation function: + + class BootimgPcbiosPlugin(SourcePlugin): + name = 'bootimg-pcbios' + + @classmethod + def do_prepare_partition(self, part, ...) + + If the subclass itself doesn't implement a function, a 'default' + version in a superclass will be located and used, which is why all + plugins must be derived from SourcePlugin. + + The SourcePlugin class defines the following methods, which is the + current set of methods that can be implemented/overridden by + --source plugins. Any methods not implemented by a SourcePlugin + subclass inherit the implementations present in the SourcePlugin + class (see the SourcePlugin source for details): + + do_prepare_partition() + Called to do the actual content population for a + partition. In other words, it 'prepares' the final partition + image which will be incorporated into the disk image. + + do_post_partition() + Called after the partition is created. It is useful to add post + operations e.g. signing the partition. + + do_configure_partition() + Called before do_prepare_partition(), typically used to + create custom configuration files for a partition, for + example syslinux or grub config files. + + do_install_disk() + Called after all partitions have been prepared and assembled + into a disk image. This provides a hook to allow + finalization of a disk image, for example to write an MBR to + it. + + do_stage_partition() + Special content-staging hook called before + do_prepare_partition(), normally empty. + + Typically, a partition will just use the passed-in + parameters, for example the unmodified value of bootimg_dir. + In some cases however, things may need to be more tailored. + As an example, certain files may additionally need to be + take from bootimg_dir + /boot. This hook allows those files + to be staged in a customized fashion. Note that + get_bitbake_var() allows you to access non-standard + variables that you might want to use for these types of + situations. + + This scheme is extensible - adding more hooks is a simple matter + of adding more plugin methods to SourcePlugin and derived classes. + Please see the implementation for details. +""" + +wic_overview_help = """ + +NAME + wic overview - General overview of wic + +DESCRIPTION + The 'wic' command generates partitioned images from existing + OpenEmbedded build artifacts. Image generation is driven by + partitioning commands contained in an 'Openembedded kickstart' + (.wks) file (see 'wic help kickstart') specified either directly + on the command-line or as one of a selection of canned .wks files + (see 'wic list images'). When applied to a given set of build + artifacts, the result is an image or set of images that can be + directly written onto media and used on a particular system. + + The 'wic' command and the infrastructure it's based on is by + definition incomplete - its purpose is to allow the generation of + customized images, and as such was designed to be completely + extensible via a plugin interface (see 'wic help plugins'). + + Background and Motivation + + wic is meant to be a completely independent standalone utility + that initially provides easier-to-use and more flexible + replacements for a couple bits of existing functionality in + oe-core: directdisk.bbclass and mkefidisk.sh. The difference + between wic and those examples is that with wic the functionality + of those scripts is implemented by a general-purpose partitioning + 'language' based on Redhat kickstart syntax). + + The initial motivation and design considerations that lead to the + current tool are described exhaustively in Yocto Bug #3847 + (https://bugzilla.yoctoproject.org/show_bug.cgi?id=3847). + + Implementation and Examples + + wic can be used in two different modes, depending on how much + control the user needs in specifying the Openembedded build + artifacts that will be used in creating the image: 'raw' and + 'cooked'. + + If used in 'raw' mode, artifacts are explicitly specified via + command-line arguments (see example below). + + The more easily usable 'cooked' mode uses the current MACHINE + setting and a specified image name to automatically locate the + artifacts used to create the image. + + OE kickstart files (.wks) can of course be specified directly on + the command-line, but the user can also choose from a set of + 'canned' .wks files available via the 'wic list images' command + (example below). + + In any case, the prerequisite for generating any image is to have + the build artifacts already available. The below examples assume + the user has already build a 'core-image-minimal' for a specific + machine (future versions won't require this redundant step, but + for now that's typically how build artifacts get generated). + + The other prerequisite is to source the build environment: + + $ source oe-init-build-env + + To start out with, we'll generate an image from one of the canned + .wks files. The following generates a list of availailable + images: + + $ wic list images + mkefidisk Create an EFI disk image + directdisk Create a 'pcbios' direct disk image + + You can get more information about any of the available images by + typing 'wic list xxx help', where 'xxx' is one of the image names: + + $ wic list mkefidisk help + + Creates a partitioned EFI disk image that the user can directly dd + to boot media. + + At any time, you can get help on the 'wic' command or any + subcommand (currently 'list' and 'create'). For instance, to get + the description of 'wic create' command and its parameters: + + $ wic create + + Usage: + + Create a new OpenEmbedded image + + usage: wic create <wks file or image name> [-o <DIRNAME> | ...] + [-i <JSON PROPERTY FILE> | --infile <JSON PROPERTY_FILE>] + [-e | --image-name] [-s, --skip-build-check] [-D, --debug] + [-r, --rootfs-dir] [-b, --bootimg-dir] [-k, --kernel-dir] + [-n, --native-sysroot] [-f, --build-rootfs] + + 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. + ... + + As mentioned in the command, you can get even more detailed + information by adding 'help' to the above: + + $ wic help create + + So, the easiest way to create an image is to use the -e option + with a canned .wks file. To use the -e option, you need to + specify the image used to generate the artifacts and you actually + need to have the MACHINE used to build them specified in your + local.conf (these requirements aren't necessary if you aren't + using the -e options.) Below, we generate a directdisk image, + pointing the process at the core-image-minimal artifacts for the + current MACHINE: + + $ wic create directdisk -e core-image-minimal + + Checking basic build environment... + Done. + + Creating image(s)... + + Info: The new image(s) can be found here: + /var/tmp/wic/build/directdisk-201309252350-sda.direct + + The following build artifacts were used to create the image(s): + + ROOTFS_DIR: ... + BOOTIMG_DIR: ... + KERNEL_DIR: ... + NATIVE_SYSROOT: ... + + The image(s) were created using OE kickstart file: + .../scripts/lib/wic/canned-wks/directdisk.wks + + The output shows the name and location of the image created, and + so that you know exactly what was used to generate the image, each + of the artifacts and the kickstart file used. + + Similarly, you can create a 'mkefidisk' image in the same way + (notice that this example uses a different machine - because it's + using the -e option, you need to change the MACHINE in your + local.conf): + + $ wic create mkefidisk -e core-image-minimal + Checking basic build environment... + Done. + + Creating image(s)... + + Info: The new image(s) can be found here: + /var/tmp/wic/build/mkefidisk-201309260027-sda.direct + + ... + + Here's an example that doesn't take the easy way out and manually + specifies each build artifact, along with a non-canned .wks file, + and also uses the -o option to have wic create the output + somewhere other than the default /var/tmp/wic: + + $ wic create ./test.wks -o ./out --rootfs-dir + tmp/work/qemux86_64-poky-linux/core-image-minimal/1.0-r0/rootfs + --bootimg-dir tmp/sysroots/qemux86-64/usr/share + --kernel-dir tmp/deploy/images/qemux86-64 + --native-sysroot tmp/sysroots/x86_64-linux + + Creating image(s)... + + Info: The new image(s) can be found here: + out/build/test-201507211313-sda.direct + + The following build artifacts were used to create the image(s): + ROOTFS_DIR: tmp/work/qemux86_64-poky-linux/core-image-minimal/1.0-r0/rootfs + BOOTIMG_DIR: tmp/sysroots/qemux86-64/usr/share + KERNEL_DIR: tmp/deploy/images/qemux86-64 + NATIVE_SYSROOT: tmp/sysroots/x86_64-linux + + The image(s) were created using OE kickstart file: + ./test.wks + + Here is a content of test.wks: + + part /boot --source bootimg-pcbios --ondisk sda --label boot --active --align 1024 + part / --source rootfs --ondisk sda --fstype=ext3 --label platform --align 1024 + + bootloader --timeout=0 --append="rootwait rootfstype=ext3 video=vesafb vga=0x318 console=tty0" + + + Finally, here's an example of the actual partition language + commands used to generate the mkefidisk image i.e. these are the + contents of the mkefidisk.wks OE kickstart file: + + # short-description: Create an EFI disk image + # long-description: Creates a partitioned EFI disk image that the user + # can directly dd to boot media. + + part /boot --source bootimg-efi --ondisk sda --fstype=efi --active + + part / --source rootfs --ondisk sda --fstype=ext3 --label platform + + part swap --ondisk sda --size 44 --label swap1 --fstype=swap + + bootloader --timeout=10 --append="rootwait console=ttyPCH0,115200" + + You can get a complete listing and description of all the + kickstart commands available for use in .wks files from 'wic help + kickstart'. +""" + +wic_kickstart_help = """ + +NAME + wic kickstart - wic kickstart reference + +DESCRIPTION + This section provides the definitive reference to the wic + kickstart language. It also provides documentation on the list of + --source plugins available for use from the 'part' command (see + the 'Platform-specific Plugins' section below). + + The current wic implementation supports only the basic kickstart + partitioning commands: partition (or part for short) and + bootloader. + + The following is a listing of the commands, their syntax, and + meanings. The commands are based on the Fedora kickstart + documentation but with modifications to reflect wic capabilities. + + http://fedoraproject.org/wiki/Anaconda/Kickstart#part_or_partition + http://fedoraproject.org/wiki/Anaconda/Kickstart#bootloader + + Commands + + * 'part' or 'partition' + + This command creates a partition on the system and uses the + following syntax: + + part [<mountpoint>] + + The <mountpoint> is where the partition will be mounted and + must take of one of the following forms: + + /<path>: For example: /, /usr, or /home + + swap: The partition will be used as swap space. + + If a <mountpoint> is not specified the partition will be created + but will not be mounted. + + Partitions with a <mountpoint> specified will be automatically mounted. + This is achieved by wic adding entries to the fstab during image + generation. In order for a valid fstab to be generated one of the + --ondrive, --ondisk or --use-uuid partition options must be used for + each partition that specifies a mountpoint. Note that with --use-uuid + and non-root <mountpoint>, including swap, the mount program must + understand the PARTUUID syntax. This currently excludes the busybox + versions of these applications. + + + The following are supported 'part' options: + + --size: The minimum partition size. Specify an integer value + such as 500. Multipliers k, M ang G can be used. If + not specified, the size is in MB. + You do not need this option if you use --source. + + --fixed-size: Exact partition size. Value format is the same + as for --size option. This option cannot be + specified along with --size. If partition data + is larger than --fixed-size and error will be + raised when assembling disk image. + + --source: This option is a wic-specific option that names the + source of the data that will populate the + partition. The most common value for this option + is 'rootfs', but can be any value which maps to a + valid 'source plugin' (see 'wic help plugins'). + + If '--source rootfs' is used, it tells the wic + command to create a partition as large as needed + and to fill it with the contents of the root + filesystem pointed to by the '-r' wic command-line + option (or the equivalent rootfs derived from the + '-e' command-line option). The filesystem type + that will be used to create the partition is driven + by the value of the --fstype option specified for + the partition (see --fstype below). + + If --source <plugin-name>' is used, it tells the + wic command to create a partition as large as + needed and to fill with the contents of the + partition that will be generated by the specified + plugin name using the data pointed to by the '-r' + wic command-line option (or the equivalent rootfs + derived from the '-e' command-line option). + Exactly what those contents and filesystem type end + up being are dependent on the given plugin + implementation. + + If --source option is not used, the wic command + will create empty partition. --size parameter has + to be used to specify size of empty partition. + + --ondisk or --ondrive: Forces the partition to be created on + a particular disk. + + --fstype: Sets the file system type for the partition. These + apply to partitions created using '--source rootfs' (see + --source above). Valid values are: + + vfat + msdos + ext2 + ext3 + ext4 + btrfs + squashfs + swap + + --fsoptions: Specifies a free-form string of options to be + used when mounting the filesystem. This string + will be copied into the /etc/fstab file of the + installed system and should be enclosed in + quotes. If not specified, the default string is + "defaults". + + --label label: Specifies the label to give to the filesystem + to be made on the partition. If the given + label is already in use by another filesystem, + a new label is created for the partition. + + --active: Marks the partition as active. + + --align (in KBytes): This option is specific to wic and says + to start a partition on an x KBytes + boundary. + + --no-table: This option is specific to wic. Space will be + reserved for the partition and it will be + populated but it will not be added to the + partition table. It may be useful for + bootloaders. + + --exclude-path: This option is specific to wic. It excludes the given + relative path from the resulting image. If the path + ends with a slash, only the content of the directory + is omitted, not the directory itself. This option only + has an effect with the rootfs source plugin. + + --extra-space: This option is specific to wic. It adds extra + space after the space filled by the content + of the partition. The final size can go + beyond the size specified by --size. + By default, 10MB. This option cannot be used + with --fixed-size option. + + --overhead-factor: This option is specific to wic. The + size of the partition is multiplied by + this factor. It has to be greater than or + equal to 1. The default value is 1.3. + This option cannot be used with --fixed-size + option. + + --part-name: This option is specific to wic. It specifies name for GPT partitions. + + --part-type: This option is specific to wic. It specifies partition + type GUID for GPT partitions. + List of partition type GUIDS can be found here: + http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs + + --use-uuid: This option is specific to wic. It makes wic to generate + random globally unique identifier (GUID) for the partition + and use it in bootloader configuration to specify root partition. + + --uuid: This option is specific to wic. It specifies partition UUID. + It's useful if preconfigured partition UUID is added to kernel command line + in bootloader configuration before running wic. In this case .wks file can + be generated or modified to set preconfigured parition UUID using this option. + + --fsuuid: This option is specific to wic. It specifies filesystem UUID. + It's useful if preconfigured filesystem UUID is added to kernel command line + in bootloader configuration before running wic. In this case .wks file can + be generated or modified to set preconfigured filesystem UUID using this option. + + --system-id: This option is specific to wic. It specifies partition system id. It's useful + for the harware that requires non-default partition system ids. The parameter + in one byte long hex number either with 0x prefix or without it. + + --mkfs-extraopts: This option specifies extra options to pass to mkfs utility. + NOTE, that wic uses default options for some filesystems, for example + '-S 512' for mkfs.fat or '-F -i 8192' for mkfs.ext. Those options will + not take effect when --mkfs-extraopts is used. This should be taken into + account when using --mkfs-extraopts. + + * bootloader + + This command allows the user to specify various bootloader + options. The following are supported 'bootloader' options: + + --timeout: Specifies the number of seconds before the + bootloader times out and boots the default option. + + --append: Specifies kernel parameters. These will be added to + bootloader command-line - for example, the syslinux + APPEND or grub kernel command line. + + --configfile: Specifies a user defined configuration file for + the bootloader. This file must be located in the + canned-wks folder or could be the full path to the + file. Using this option will override any other + bootloader option. + + Note that bootloader functionality and boot partitions are + implemented by the various --source plugins that implement + bootloader functionality; the bootloader command essentially + provides a means of modifying bootloader configuration. + + * include + + This command allows the user to include the content of .wks file + into original .wks file. + + Command uses the following syntax: + + include <file> + + The <file> is either path to the file or its name. If name is + specified wic will try to find file in the directories with canned + .wks files. + +""" + +wic_help_help = """ +NAME + wic help - display a help topic + +DESCRIPTION + Specify a help topic to display it. Topics are shown above. +""" diff --git a/poky/scripts/lib/wic/ksparser.py b/poky/scripts/lib/wic/ksparser.py new file mode 100644 index 000000000..e590b2fe3 --- /dev/null +++ b/poky/scripts/lib/wic/ksparser.py @@ -0,0 +1,235 @@ +#!/usr/bin/env python -tt +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# Copyright (c) 2016 Intel, Inc. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; version 2 of the License +# +# 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., 59 +# Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# DESCRIPTION +# This module provides parser for kickstart format +# +# AUTHORS +# Ed Bartosh <ed.bartosh> (at] linux.intel.com> + +"""Kickstart parser module.""" + +import os +import shlex +import logging + +from argparse import ArgumentParser, ArgumentError, ArgumentTypeError + +from wic.engine import find_canned +from wic.partition import Partition + +logger = logging.getLogger('wic') + +class KickStartError(Exception): + """Custom exception.""" + pass + +class KickStartParser(ArgumentParser): + """ + This class overwrites error method to throw exception + instead of producing usage message(default argparse behavior). + """ + def error(self, message): + raise ArgumentError(None, message) + +def sizetype(arg): + """ + Custom type for ArgumentParser + Converts size string in <num>[K|k|M|G] format into the integer value + """ + if arg.isdigit(): + return int(arg) * 1024 + + if not arg[:-1].isdigit(): + raise ArgumentTypeError("Invalid size: %r" % arg) + + size = int(arg[:-1]) + if arg.endswith("k") or arg.endswith("K"): + return size + if arg.endswith("M"): + return size * 1024 + if arg.endswith("G"): + return size * 1024 * 1024 + + raise ArgumentTypeError("Invalid size: %r" % arg) + +def overheadtype(arg): + """ + Custom type for ArgumentParser + Converts overhead string to float and checks if it's bigger than 1.0 + """ + try: + result = float(arg) + except ValueError: + raise ArgumentTypeError("Invalid value: %r" % arg) + + if result < 1.0: + raise ArgumentTypeError("Overhead factor should be > 1.0" % arg) + + return result + +def cannedpathtype(arg): + """ + Custom type for ArgumentParser + Tries to find file in the list of canned wks paths + """ + scripts_path = os.path.abspath(os.path.dirname(__file__) + '../../..') + result = find_canned(scripts_path, arg) + if not result: + raise ArgumentTypeError("file not found: %s" % arg) + return result + +def systemidtype(arg): + """ + Custom type for ArgumentParser + Checks if the argument sutisfies system id requirements, + i.e. if it's one byte long integer > 0 + """ + error = "Invalid system type: %s. must be hex "\ + "between 0x1 and 0xFF" % arg + try: + result = int(arg, 16) + except ValueError: + raise ArgumentTypeError(error) + + if result <= 0 or result > 0xff: + raise ArgumentTypeError(error) + + return arg + +class KickStart(): + """Kickstart parser implementation.""" + + DEFAULT_EXTRA_SPACE = 10*1024 + DEFAULT_OVERHEAD_FACTOR = 1.3 + + def __init__(self, confpath): + + self.partitions = [] + self.bootloader = None + self.lineno = 0 + self.partnum = 0 + + parser = KickStartParser() + subparsers = parser.add_subparsers() + + part = subparsers.add_parser('part') + part.add_argument('mountpoint', nargs='?') + part.add_argument('--active', action='store_true') + part.add_argument('--align', type=int) + part.add_argument('--exclude-path', nargs='+') + part.add_argument("--extra-space", type=sizetype) + part.add_argument('--fsoptions', dest='fsopts') + part.add_argument('--fstype', default='vfat', + choices=('ext2', 'ext3', 'ext4', 'btrfs', + 'squashfs', 'vfat', 'msdos', 'swap')) + part.add_argument('--mkfs-extraopts', default='') + part.add_argument('--label') + part.add_argument('--no-table', action='store_true') + part.add_argument('--ondisk', '--ondrive', dest='disk', default='sda') + part.add_argument("--overhead-factor", type=overheadtype) + part.add_argument('--part-name') + part.add_argument('--part-type') + part.add_argument('--rootfs-dir') + + # --size and --fixed-size cannot be specified together; options + # ----extra-space and --overhead-factor should also raise a parser + # --error, but since nesting mutually exclusive groups does not work, + # ----extra-space/--overhead-factor are handled later + sizeexcl = part.add_mutually_exclusive_group() + sizeexcl.add_argument('--size', type=sizetype, default=0) + sizeexcl.add_argument('--fixed-size', type=sizetype, default=0) + + part.add_argument('--source') + part.add_argument('--sourceparams') + part.add_argument('--system-id', type=systemidtype) + part.add_argument('--use-uuid', action='store_true') + part.add_argument('--uuid') + part.add_argument('--fsuuid') + + bootloader = subparsers.add_parser('bootloader') + bootloader.add_argument('--append') + bootloader.add_argument('--configfile') + bootloader.add_argument('--ptable', choices=('msdos', 'gpt'), + default='msdos') + bootloader.add_argument('--timeout', type=int) + bootloader.add_argument('--source') + + include = subparsers.add_parser('include') + include.add_argument('path', type=cannedpathtype) + + self._parse(parser, confpath) + if not self.bootloader: + logger.warning('bootloader config not specified, using defaults\n') + self.bootloader = bootloader.parse_args([]) + + def _parse(self, parser, confpath): + """ + Parse file in .wks format using provided parser. + """ + with open(confpath) as conf: + lineno = 0 + for line in conf: + line = line.strip() + lineno += 1 + if line and line[0] != '#': + try: + line_args = shlex.split(line) + parsed = parser.parse_args(line_args) + except ArgumentError as err: + raise KickStartError('%s:%d: %s' % \ + (confpath, lineno, err)) + if line.startswith('part'): + # SquashFS does not support UUID + if parsed.fstype == 'squashfs' and parsed.use_uuid: + err = "%s:%d: SquashFS does not support UUID" \ + % (confpath, lineno) + raise KickStartError(err) + # using ArgumentParser one cannot easily tell if option + # was passed as argument, if said option has a default + # value; --overhead-factor/--extra-space cannot be used + # with --fixed-size, so at least detect when these were + # passed with non-0 values ... + if parsed.fixed_size: + if parsed.overhead_factor or parsed.extra_space: + err = "%s:%d: arguments --overhead-factor and --extra-space not "\ + "allowed with argument --fixed-size" \ + % (confpath, lineno) + raise KickStartError(err) + else: + # ... and provide defaults if not using + # --fixed-size iff given option was not used + # (again, one cannot tell if option was passed but + # with value equal to 0) + if '--overhead-factor' not in line_args: + parsed.overhead_factor = self.DEFAULT_OVERHEAD_FACTOR + if '--extra-space' not in line_args: + parsed.extra_space = self.DEFAULT_EXTRA_SPACE + + self.partnum += 1 + self.partitions.append(Partition(parsed, self.partnum)) + elif line.startswith('include'): + self._parse(parser, parsed.path) + elif line.startswith('bootloader'): + if not self.bootloader: + self.bootloader = parsed + else: + err = "%s:%d: more than one bootloader specified" \ + % (confpath, lineno) + raise KickStartError(err) diff --git a/poky/scripts/lib/wic/misc.py b/poky/scripts/lib/wic/misc.py new file mode 100644 index 000000000..ee888b478 --- /dev/null +++ b/poky/scripts/lib/wic/misc.py @@ -0,0 +1,263 @@ +# 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 provides a place to collect various wic-related utils +# for the OpenEmbedded Image Tools. +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# +"""Miscellaneous functions.""" + +import logging +import os +import re +import subprocess + +from collections import defaultdict +from distutils import spawn + +from wic import WicError + +logger = logging.getLogger('wic') + +# executable -> recipe pairs for exec_native_cmd +NATIVE_RECIPES = {"bmaptool": "bmap-tools", + "grub-mkimage": "grub-efi", + "isohybrid": "syslinux", + "mcopy": "mtools", + "mdel" : "mtools", + "mdeltree" : "mtools", + "mdir" : "mtools", + "mkdosfs": "dosfstools", + "mkisofs": "cdrtools", + "mkfs.btrfs": "btrfs-tools", + "mkfs.ext2": "e2fsprogs", + "mkfs.ext3": "e2fsprogs", + "mkfs.ext4": "e2fsprogs", + "mkfs.vfat": "dosfstools", + "mksquashfs": "squashfs-tools", + "mkswap": "util-linux", + "mmd": "mtools", + "parted": "parted", + "sfdisk": "util-linux", + "sgdisk": "gptfdisk", + "syslinux": "syslinux" + } + +def runtool(cmdln_or_args): + """ wrapper for most of the subprocess calls + input: + cmdln_or_args: can be both args and cmdln str (shell=True) + return: + rc, output + """ + if isinstance(cmdln_or_args, list): + cmd = cmdln_or_args[0] + shell = False + else: + import shlex + cmd = shlex.split(cmdln_or_args)[0] + shell = True + + sout = subprocess.PIPE + serr = subprocess.STDOUT + + try: + process = subprocess.Popen(cmdln_or_args, stdout=sout, + stderr=serr, shell=shell) + sout, serr = process.communicate() + # combine stdout and stderr, filter None out and decode + out = ''.join([out.decode('utf-8') for out in [sout, serr] if out]) + except OSError as err: + if err.errno == 2: + # [Errno 2] No such file or directory + raise WicError('Cannot run command: %s, lost dependency?' % cmd) + else: + raise # relay + + return process.returncode, out + +def _exec_cmd(cmd_and_args, as_shell=False): + """ + Execute command, catching stderr, stdout + + Need to execute as_shell if the command uses wildcards + """ + logger.debug("_exec_cmd: %s", cmd_and_args) + args = cmd_and_args.split() + logger.debug(args) + + if as_shell: + ret, out = runtool(cmd_and_args) + else: + ret, out = runtool(args) + out = out.strip() + if ret != 0: + raise WicError("_exec_cmd: %s returned '%s' instead of 0\noutput: %s" % \ + (cmd_and_args, ret, out)) + + logger.debug("_exec_cmd: output for %s (rc = %d): %s", + cmd_and_args, ret, out) + + return ret, out + + +def exec_cmd(cmd_and_args, as_shell=False): + """ + Execute command, return output + """ + return _exec_cmd(cmd_and_args, as_shell)[1] + + +def exec_native_cmd(cmd_and_args, native_sysroot, pseudo=""): + """ + Execute native command, catching stderr, stdout + + Need to execute as_shell if the command uses wildcards + + Always need to execute native commands as_shell + """ + # The reason -1 is used is because there may be "export" commands. + args = cmd_and_args.split(';')[-1].split() + logger.debug(args) + + if pseudo: + cmd_and_args = pseudo + cmd_and_args + + native_paths = "%s/sbin:%s/usr/sbin:%s/usr/bin" % \ + (native_sysroot, native_sysroot, native_sysroot) + + native_cmd_and_args = "export PATH=%s:$PATH;%s" % \ + (native_paths, cmd_and_args) + logger.debug("exec_native_cmd: %s", native_cmd_and_args) + + # If the command isn't in the native sysroot say we failed. + if spawn.find_executable(args[0], native_paths): + ret, out = _exec_cmd(native_cmd_and_args, True) + else: + ret = 127 + out = "can't find native executable %s in %s" % (args[0], native_paths) + + prog = args[0] + # shell command-not-found + if ret == 127 \ + or (pseudo and ret == 1 and out == "Can't find '%s' in $PATH." % prog): + msg = "A native program %s required to build the image "\ + "was not found (see details above).\n\n" % prog + recipe = NATIVE_RECIPES.get(prog) + if recipe: + msg += "Please make sure wic-tools have %s-native in its DEPENDS, "\ + "build it with 'bitbake wic-tools' and try again.\n" % recipe + else: + msg += "Wic failed to find a recipe to build native %s. Please "\ + "file a bug against wic.\n" % prog + raise WicError(msg) + + return ret, out + +BOOTDD_EXTRA_SPACE = 16384 + +class BitbakeVars(defaultdict): + """ + Container for Bitbake variables. + """ + def __init__(self): + defaultdict.__init__(self, dict) + + # default_image and vars_dir attributes should be set from outside + self.default_image = None + self.vars_dir = None + + def _parse_line(self, line, image, matcher=re.compile(r"^([a-zA-Z0-9\-_+./~]+)=(.*)")): + """ + Parse one line from bitbake -e output or from .env file. + Put result key-value pair into the storage. + """ + if "=" not in line: + return + match = matcher.match(line) + if not match: + return + key, val = match.groups() + self[image][key] = val.strip('"') + + def get_var(self, var, image=None, cache=True): + """ + Get bitbake variable from 'bitbake -e' output or from .env file. + This is a lazy method, i.e. it runs bitbake or parses file only when + only when variable is requested. It also caches results. + """ + if not image: + image = self.default_image + + if image not in self: + if image and self.vars_dir: + fname = os.path.join(self.vars_dir, image + '.env') + if os.path.isfile(fname): + # parse .env file + with open(fname) as varsfile: + for line in varsfile: + self._parse_line(line, image) + else: + print("Couldn't get bitbake variable from %s." % fname) + print("File %s doesn't exist." % fname) + return + else: + # Get bitbake -e output + cmd = "bitbake -e" + if image: + cmd += " %s" % image + + log_level = logger.getEffectiveLevel() + logger.setLevel(logging.INFO) + ret, lines = _exec_cmd(cmd) + logger.setLevel(log_level) + + if ret: + logger.error("Couldn't get '%s' output.", cmd) + logger.error("Bitbake failed with error:\n%s\n", lines) + return + + # Parse bitbake -e output + for line in lines.split('\n'): + self._parse_line(line, image) + + # Make first image a default set of variables + if cache: + images = [key for key in self if key] + if len(images) == 1: + self[None] = self[image] + + result = self[image].get(var) + if not cache: + self.pop(image, None) + + return result + +# Create BB_VARS singleton +BB_VARS = BitbakeVars() + +def get_bitbake_var(var, image=None, cache=True): + """ + Provide old get_bitbake_var API by wrapping + get_var method of BB_VARS singleton. + """ + return BB_VARS.get_var(var, image, cache) diff --git a/poky/scripts/lib/wic/partition.py b/poky/scripts/lib/wic/partition.py new file mode 100644 index 000000000..3fe5c4e26 --- /dev/null +++ b/poky/scripts/lib/wic/partition.py @@ -0,0 +1,425 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# Copyright (c) 2013-2016 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 provides the OpenEmbedded partition object definitions. +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# Ed Bartosh <ed.bartosh> (at] linux.intel.com> + +import logging +import os +import uuid + +from wic import WicError +from wic.misc import exec_cmd, exec_native_cmd, get_bitbake_var +from wic.pluginbase import PluginMgr + +logger = logging.getLogger('wic') + +class Partition(): + + def __init__(self, args, lineno): + self.args = args + self.active = args.active + self.align = args.align + self.disk = args.disk + self.device = None + self.extra_space = args.extra_space + self.exclude_path = args.exclude_path + self.fsopts = args.fsopts + self.fstype = args.fstype + self.label = args.label + self.mkfs_extraopts = args.mkfs_extraopts + self.mountpoint = args.mountpoint + self.no_table = args.no_table + self.num = None + self.overhead_factor = args.overhead_factor + self.part_name = args.part_name + self.part_type = args.part_type + self.rootfs_dir = args.rootfs_dir + self.size = args.size + self.fixed_size = args.fixed_size + self.source = args.source + self.sourceparams = args.sourceparams + self.system_id = args.system_id + self.use_uuid = args.use_uuid + self.uuid = args.uuid + self.fsuuid = args.fsuuid + + self.lineno = lineno + self.source_file = "" + self.sourceparams_dict = {} + + def get_extra_block_count(self, current_blocks): + """ + The --size param is reflected in self.size (in kB), and we already + have current_blocks (1k) blocks, calculate and return the + number of (1k) blocks we need to add to get to --size, 0 if + we're already there or beyond. + """ + logger.debug("Requested partition size for %s: %d", + self.mountpoint, self.size) + + if not self.size: + return 0 + + requested_blocks = self.size + + logger.debug("Requested blocks %d, current_blocks %d", + requested_blocks, current_blocks) + + if requested_blocks > current_blocks: + return requested_blocks - current_blocks + else: + return 0 + + def get_rootfs_size(self, actual_rootfs_size=0): + """ + Calculate the required size of rootfs taking into consideration + --size/--fixed-size flags as well as overhead and extra space, as + specified in kickstart file. Raises an error if the + `actual_rootfs_size` is larger than fixed-size rootfs. + + """ + if self.fixed_size: + rootfs_size = self.fixed_size + if actual_rootfs_size > rootfs_size: + raise WicError("Actual rootfs size (%d kB) is larger than " + "allowed size %d kB" % + (actual_rootfs_size, rootfs_size)) + else: + extra_blocks = self.get_extra_block_count(actual_rootfs_size) + if extra_blocks < self.extra_space: + extra_blocks = self.extra_space + + rootfs_size = actual_rootfs_size + extra_blocks + rootfs_size *= self.overhead_factor + + logger.debug("Added %d extra blocks to %s to get to %d total blocks", + extra_blocks, self.mountpoint, rootfs_size) + + return rootfs_size + + @property + def disk_size(self): + """ + Obtain on-disk size of partition taking into consideration + --size/--fixed-size options. + + """ + return self.fixed_size if self.fixed_size else self.size + + def prepare(self, creator, cr_workdir, oe_builddir, rootfs_dir, + bootimg_dir, kernel_dir, native_sysroot): + """ + Prepare content for individual partitions, depending on + partition command parameters. + """ + if not self.source: + if not self.size and not self.fixed_size: + raise WicError("The %s partition has a size of zero. Please " + "specify a non-zero --size/--fixed-size for that " + "partition." % self.mountpoint) + + if self.fstype == "swap": + self.prepare_swap_partition(cr_workdir, oe_builddir, + native_sysroot) + self.source_file = "%s/fs.%s" % (cr_workdir, self.fstype) + else: + if self.fstype == 'squashfs': + raise WicError("It's not possible to create empty squashfs " + "partition '%s'" % (self.mountpoint)) + + rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label, + self.lineno, self.fstype) + if os.path.isfile(rootfs): + os.remove(rootfs) + + prefix = "ext" if self.fstype.startswith("ext") else self.fstype + method = getattr(self, "prepare_empty_partition_" + prefix) + method(rootfs, oe_builddir, native_sysroot) + self.source_file = rootfs + return + + plugins = PluginMgr.get_plugins('source') + + if self.source not in plugins: + raise WicError("The '%s' --source specified for %s doesn't exist.\n\t" + "See 'wic list source-plugins' for a list of available" + " --sources.\n\tSee 'wic help source-plugins' for " + "details on adding a new source plugin." % + (self.source, self.mountpoint)) + + srcparams_dict = {} + if self.sourceparams: + # Split sourceparams string of the form key1=val1[,key2=val2,...] + # into a dict. Also accepts valueless keys i.e. without = + splitted = self.sourceparams.split(',') + srcparams_dict = dict(par.split('=') for par in splitted if par) + + plugin = PluginMgr.get_plugins('source')[self.source] + plugin.do_configure_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, native_sysroot) + plugin.do_stage_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, native_sysroot) + plugin.do_prepare_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, rootfs_dir, native_sysroot) + plugin.do_post_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, rootfs_dir, native_sysroot) + + # further processing required Partition.size to be an integer, make + # sure that it is one + if not isinstance(self.size, int): + raise WicError("Partition %s internal size is not an integer. " + "This a bug in source plugin %s and needs to be fixed." % + (self.mountpoint, self.source)) + + if self.fixed_size and self.size > self.fixed_size: + raise WicError("File system image of partition %s is " + "larger (%d kB) than its allowed size %d kB" % + (self.mountpoint, self.size, self.fixed_size)) + + def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir, + native_sysroot, real_rootfs = True): + """ + Prepare content for a rootfs partition i.e. create a partition + and fill it from a /rootfs dir. + + Currently handles ext2/3/4, btrfs, vfat and squashfs. + """ + p_prefix = os.environ.get("PSEUDO_PREFIX", "%s/usr" % native_sysroot) + p_localstatedir = os.environ.get("PSEUDO_LOCALSTATEDIR", + "%s/../pseudo" % get_bitbake_var("IMAGE_ROOTFS")) + p_passwd = os.environ.get("PSEUDO_PASSWD", rootfs_dir) + p_nosymlinkexp = os.environ.get("PSEUDO_NOSYMLINKEXP", "1") + pseudo = "export PSEUDO_PREFIX=%s;" % p_prefix + pseudo += "export PSEUDO_LOCALSTATEDIR=%s;" % p_localstatedir + pseudo += "export PSEUDO_PASSWD=%s;" % p_passwd + pseudo += "export PSEUDO_NOSYMLINKEXP=%s;" % p_nosymlinkexp + pseudo += "%s " % get_bitbake_var("FAKEROOTCMD") + + rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label, + self.lineno, self.fstype) + if os.path.isfile(rootfs): + os.remove(rootfs) + + # Get rootfs size from bitbake variable if it's not set in .ks file + if not self.size and real_rootfs: + # Bitbake variable ROOTFS_SIZE is calculated in + # Image._get_rootfs_size method from meta/lib/oe/image.py + # using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT, + # IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE + rsize_bb = get_bitbake_var('ROOTFS_SIZE') + if rsize_bb: + logger.warning('overhead-factor was specified, but size was not,' + ' so bitbake variables will be used for the size.' + ' In this case both IMAGE_OVERHEAD_FACTOR and ' + '--overhead-factor will be applied') + self.size = int(round(float(rsize_bb))) + + prefix = "ext" if self.fstype.startswith("ext") else self.fstype + method = getattr(self, "prepare_rootfs_" + prefix) + method(rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo) + self.source_file = rootfs + + # get the rootfs size in the right units for kickstart (kB) + du_cmd = "du -Lbks %s" % rootfs + out = exec_cmd(du_cmd) + self.size = int(out.split()[0]) + + def prepare_rootfs_ext(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for an ext2/3/4 rootfs partition. + """ + du_cmd = "du -ks %s" % rootfs_dir + out = exec_cmd(du_cmd) + actual_rootfs_size = int(out.split()[0]) + + rootfs_size = self.get_rootfs_size(actual_rootfs_size) + + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), rootfs_size * 1024) + + extraopts = self.mkfs_extraopts or "-F -i 8192" + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s %s %s %s -U %s -d %s" % \ + (self.fstype, extraopts, rootfs, label_str, self.fsuuid, rootfs_dir) + exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) + + mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs) + exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) + + def prepare_rootfs_btrfs(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for a btrfs rootfs partition. + """ + du_cmd = "du -ks %s" % rootfs_dir + out = exec_cmd(du_cmd) + actual_rootfs_size = int(out.split()[0]) + + rootfs_size = self.get_rootfs_size(actual_rootfs_size) + + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), rootfs_size * 1024) + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -b %d -r %s %s %s -U %s %s" % \ + (self.fstype, rootfs_size * 1024, rootfs_dir, label_str, + self.mkfs_extraopts, self.fsuuid, rootfs) + exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) + + def prepare_rootfs_msdos(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for a msdos/vfat rootfs partition. + """ + du_cmd = "du -bks %s" % rootfs_dir + out = exec_cmd(du_cmd) + blocks = int(out.split()[0]) + + rootfs_size = self.get_rootfs_size(blocks) + + label_str = "-n boot" + if self.label: + label_str = "-n %s" % self.label + + size_str = "" + if self.fstype == 'msdos': + size_str = "-F 16" # FAT 16 + + extraopts = self.mkfs_extraopts or '-S 512' + + dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \ + (label_str, self.fsuuid, size_str, extraopts, rootfs, + max(8250, rootfs_size)) + exec_native_cmd(dosfs_cmd, native_sysroot) + + mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, rootfs_dir) + exec_native_cmd(mcopy_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % rootfs + exec_cmd(chmod_cmd) + + prepare_rootfs_vfat = prepare_rootfs_msdos + + def prepare_rootfs_squashfs(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for a squashfs rootfs partition. + """ + extraopts = self.mkfs_extraopts or '-noappend' + squashfs_cmd = "mksquashfs %s %s %s" % \ + (rootfs_dir, rootfs, extraopts) + exec_native_cmd(squashfs_cmd, native_sysroot, pseudo=pseudo) + + def prepare_empty_partition_ext(self, rootfs, oe_builddir, + native_sysroot): + """ + Prepare an empty ext2/3/4 partition. + """ + size = self.disk_size + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), size * 1024) + + extraopts = self.mkfs_extraopts or "-i 8192" + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -F %s %s -U %s %s" % \ + (self.fstype, extraopts, label_str, self.fsuuid, rootfs) + exec_native_cmd(mkfs_cmd, native_sysroot) + + def prepare_empty_partition_btrfs(self, rootfs, oe_builddir, + native_sysroot): + """ + Prepare an empty btrfs partition. + """ + size = self.disk_size + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), size * 1024) + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -b %d %s -U %s %s %s" % \ + (self.fstype, self.size * 1024, label_str, self.fsuuid, + self.mkfs_extraopts, rootfs) + exec_native_cmd(mkfs_cmd, native_sysroot) + + def prepare_empty_partition_msdos(self, rootfs, oe_builddir, + native_sysroot): + """ + Prepare an empty vfat partition. + """ + blocks = self.disk_size + + label_str = "-n boot" + if self.label: + label_str = "-n %s" % self.label + + size_str = "" + if self.fstype == 'msdos': + size_str = "-F 16" # FAT 16 + + extraopts = self.mkfs_extraopts or '-S 512' + + dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \ + (label_str, self.fsuuid, extraopts, size_str, rootfs, + blocks) + + exec_native_cmd(dosfs_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % rootfs + exec_cmd(chmod_cmd) + + prepare_empty_partition_vfat = prepare_empty_partition_msdos + + def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot): + """ + Prepare a swap partition. + """ + path = "%s/fs.%s" % (cr_workdir, self.fstype) + + with open(path, 'w') as sparse: + os.ftruncate(sparse.fileno(), self.size * 1024) + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkswap_cmd = "mkswap %s -U %s %s" % (label_str, self.fsuuid, path) + exec_native_cmd(mkswap_cmd, native_sysroot) diff --git a/poky/scripts/lib/wic/pluginbase.py b/poky/scripts/lib/wic/pluginbase.py new file mode 100644 index 000000000..686d2fee3 --- /dev/null +++ b/poky/scripts/lib/wic/pluginbase.py @@ -0,0 +1,149 @@ +#!/usr/bin/env python -tt +# +# Copyright (c) 2011 Intel, Inc. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; version 2 of the License +# +# 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., 59 +# Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +__all__ = ['ImagerPlugin', 'SourcePlugin'] + +import os +import logging + +from collections import defaultdict +from importlib.machinery import SourceFileLoader + +from wic import WicError +from wic.misc import get_bitbake_var + +PLUGIN_TYPES = ["imager", "source"] + +SCRIPTS_PLUGIN_DIR = "scripts/lib/wic/plugins" + +logger = logging.getLogger('wic') + +PLUGINS = defaultdict(dict) + +class PluginMgr: + _plugin_dirs = [] + + @classmethod + def get_plugins(cls, ptype): + """Get dictionary of <plugin_name>:<class> pairs.""" + if ptype not in PLUGIN_TYPES: + raise WicError('%s is not valid plugin type' % ptype) + + # collect plugin directories + if not cls._plugin_dirs: + cls._plugin_dirs = [os.path.join(os.path.dirname(__file__), 'plugins')] + layers = get_bitbake_var("BBLAYERS") or '' + for layer_path in layers.split(): + path = os.path.join(layer_path, SCRIPTS_PLUGIN_DIR) + path = os.path.abspath(os.path.expanduser(path)) + if path not in cls._plugin_dirs and os.path.isdir(path): + cls._plugin_dirs.insert(0, path) + + if ptype not in PLUGINS: + # load all ptype plugins + for pdir in cls._plugin_dirs: + ppath = os.path.join(pdir, ptype) + if os.path.isdir(ppath): + for fname in os.listdir(ppath): + if fname.endswith('.py'): + mname = fname[:-3] + mpath = os.path.join(ppath, fname) + logger.debug("loading plugin module %s", mpath) + SourceFileLoader(mname, mpath).load_module() + + return PLUGINS.get(ptype) + +class PluginMeta(type): + def __new__(cls, name, bases, attrs): + class_type = type.__new__(cls, name, bases, attrs) + if 'name' in attrs: + PLUGINS[class_type.wic_plugin_type][attrs['name']] = class_type + + return class_type + +class ImagerPlugin(metaclass=PluginMeta): + wic_plugin_type = "imager" + + def do_create(self): + raise WicError("Method %s.do_create is not implemented" % + self.__class__.__name__) + +class SourcePlugin(metaclass=PluginMeta): + wic_plugin_type = "source" + """ + The methods that can be implemented by --source plugins. + + Any methods not implemented in a subclass inherit these. + """ + + @classmethod + def do_install_disk(cls, disk, disk_name, creator, workdir, oe_builddir, + bootimg_dir, kernel_dir, native_sysroot): + """ + Called after all partitions have been prepared and assembled into a + disk image. This provides a hook to allow finalization of a + disk image e.g. to write an MBR to it. + """ + logger.debug("SourcePlugin: do_install_disk: disk: %s", disk_name) + + @classmethod + def do_stage_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + native_sysroot): + """ + Special content staging hook called before do_prepare_partition(), + normally empty. + + Typically, a partition will just use the passed-in parame e.g + straight bootimg_dir, etc, but in some cases, things need to + be more tailored e.g. to use a deploy dir + /boot, etc. This + hook allows those files to be staged in a customized fashion. + Not that get_bitbake_var() allows you to acces non-standard + variables that you might want to use for this. + """ + logger.debug("SourcePlugin: do_stage_partition: part: %s", part) + + @classmethod + def do_configure_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + native_sysroot): + """ + Called before do_prepare_partition(), typically used to create + custom configuration files for a partition, for example + syslinux or grub config files. + """ + logger.debug("SourcePlugin: do_configure_partition: part: %s", part) + + @classmethod + def do_prepare_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, rootfs_dir, + native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + """ + logger.debug("SourcePlugin: do_prepare_partition: part: %s", part) + + @classmethod + def do_post_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, rootfs_dir, + native_sysroot): + """ + Called after the partition is created. It is useful to add post + operations e.g. security signing the partition. + """ + logger.debug("SourcePlugin: do_post_partition: part: %s", part) diff --git a/poky/scripts/lib/wic/plugins/imager/direct.py b/poky/scripts/lib/wic/plugins/imager/direct.py new file mode 100644 index 000000000..1fa6b917e --- /dev/null +++ b/poky/scripts/lib/wic/plugins/imager/direct.py @@ -0,0 +1,607 @@ +# 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 implements the 'direct' imager plugin class for 'wic' +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# + +import logging +import os +import random +import shutil +import tempfile +import uuid + +from time import strftime + +from oe.path import copyhardlinktree + +from wic import WicError +from wic.filemap import sparse_copy +from wic.ksparser import KickStart, KickStartError +from wic.pluginbase import PluginMgr, ImagerPlugin +from wic.misc import get_bitbake_var, exec_cmd, exec_native_cmd + +logger = logging.getLogger('wic') + +class DirectPlugin(ImagerPlugin): + """ + Install a system into a file containing a partitioned disk image. + + An image file is formatted with a partition table, each partition + created from a rootfs or other OpenEmbedded build artifact and dd'ed + into the virtual disk. The disk image can subsequently be dd'ed onto + media and used on actual hardware. + """ + name = 'direct' + + def __init__(self, wks_file, rootfs_dir, bootimg_dir, kernel_dir, + native_sysroot, oe_builddir, options): + try: + self.ks = KickStart(wks_file) + except KickStartError as err: + raise WicError(str(err)) + + # parse possible 'rootfs=name' items + self.rootfs_dir = dict(rdir.split('=') for rdir in rootfs_dir.split(' ')) + self.replaced_rootfs_paths = {} + self.bootimg_dir = bootimg_dir + self.kernel_dir = kernel_dir + self.native_sysroot = native_sysroot + self.oe_builddir = oe_builddir + + self.outdir = options.outdir + self.compressor = options.compressor + self.bmap = options.bmap + self.no_fstab_update = options.no_fstab_update + + self.name = "%s-%s" % (os.path.splitext(os.path.basename(wks_file))[0], + strftime("%Y%m%d%H%M")) + self.workdir = tempfile.mkdtemp(dir=self.outdir, prefix='tmp.wic.') + self._image = None + self.ptable_format = self.ks.bootloader.ptable + self.parts = self.ks.partitions + + # as a convenience, set source to the boot partition source + # instead of forcing it to be set via bootloader --source + for part in self.parts: + if not self.ks.bootloader.source and part.mountpoint == "/boot": + self.ks.bootloader.source = part.source + break + + image_path = self._full_path(self.workdir, self.parts[0].disk, "direct") + self._image = PartitionedImage(image_path, self.ptable_format, + self.parts, self.native_sysroot) + + def do_create(self): + """ + Plugin entry point. + """ + try: + self.create() + self.assemble() + self.finalize() + self.print_info() + finally: + self.cleanup() + + def _write_fstab(self, image_rootfs): + """overriden to generate fstab (temporarily) in rootfs. This is called + from _create, make sure it doesn't get called from + BaseImage.create() + """ + if not image_rootfs: + return + + fstab_path = image_rootfs + "/etc/fstab" + if not os.path.isfile(fstab_path): + return + + with open(fstab_path) as fstab: + fstab_lines = fstab.readlines() + + if self._update_fstab(fstab_lines, self.parts): + # copy rootfs dir to workdir to update fstab + # as rootfs can be used by other tasks and can't be modified + new_rootfs = os.path.realpath(os.path.join(self.workdir, "rootfs_copy")) + copyhardlinktree(image_rootfs, new_rootfs) + fstab_path = os.path.join(new_rootfs, 'etc/fstab') + + os.unlink(fstab_path) + + with open(fstab_path, "w") as fstab: + fstab.writelines(fstab_lines) + + return new_rootfs + + def _update_fstab(self, fstab_lines, parts): + """Assume partition order same as in wks""" + updated = False + for part in parts: + if not part.realnum or not part.mountpoint \ + or part.mountpoint == "/": + continue + + if part.use_uuid: + if part.fsuuid: + # FAT UUID is different from others + if len(part.fsuuid) == 10: + device_name = "UUID=%s-%s" % \ + (part.fsuuid[2:6], part.fsuuid[6:]) + else: + device_name = "UUID=%s" % part.fsuuid + else: + device_name = "PARTUUID=%s" % part.uuid + else: + # mmc device partitions are named mmcblk0p1, mmcblk0p2.. + prefix = 'p' if part.disk.startswith('mmcblk') else '' + device_name = "/dev/%s%s%d" % (part.disk, prefix, part.realnum) + + opts = part.fsopts if part.fsopts else "defaults" + line = "\t".join([device_name, part.mountpoint, part.fstype, + opts, "0", "0"]) + "\n" + + fstab_lines.append(line) + updated = True + + return updated + + def _full_path(self, path, name, extention): + """ Construct full file path to a file we generate. """ + return os.path.join(path, "%s-%s.%s" % (self.name, name, extention)) + + # + # Actual implemention + # + def create(self): + """ + For 'wic', we already have our build artifacts - we just create + filesystems from the artifacts directly and combine them into + a partitioned image. + """ + if self.no_fstab_update: + new_rootfs = None + else: + new_rootfs = self._write_fstab(self.rootfs_dir.get("ROOTFS_DIR")) + if new_rootfs: + # rootfs was copied to update fstab + self.replaced_rootfs_paths[new_rootfs] = self.rootfs_dir['ROOTFS_DIR'] + self.rootfs_dir['ROOTFS_DIR'] = new_rootfs + + for part in self.parts: + # get rootfs size from bitbake variable if it's not set in .ks file + if not part.size: + # and if rootfs name is specified for the partition + image_name = self.rootfs_dir.get(part.rootfs_dir) + if image_name and os.path.sep not in image_name: + # Bitbake variable ROOTFS_SIZE is calculated in + # Image._get_rootfs_size method from meta/lib/oe/image.py + # using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT, + # IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE + rsize_bb = get_bitbake_var('ROOTFS_SIZE', image_name) + if rsize_bb: + part.size = int(round(float(rsize_bb))) + + self._image.prepare(self) + self._image.layout_partitions() + self._image.create() + + def assemble(self): + """ + Assemble partitions into disk image + """ + self._image.assemble() + + def finalize(self): + """ + Finalize the disk image. + + For example, prepare the image to be bootable by e.g. + creating and installing a bootloader configuration. + """ + source_plugin = self.ks.bootloader.source + disk_name = self.parts[0].disk + if source_plugin: + plugin = PluginMgr.get_plugins('source')[source_plugin] + plugin.do_install_disk(self._image, disk_name, self, self.workdir, + self.oe_builddir, self.bootimg_dir, + self.kernel_dir, self.native_sysroot) + + full_path = self._image.path + # Generate .bmap + if self.bmap: + logger.debug("Generating bmap file for %s", disk_name) + python = os.path.join(self.native_sysroot, 'usr/bin/python3-native/python3') + bmaptool = os.path.join(self.native_sysroot, 'usr/bin/bmaptool') + exec_native_cmd("%s %s create %s -o %s.bmap" % \ + (python, bmaptool, full_path, full_path), self.native_sysroot) + # Compress the image + if self.compressor: + logger.debug("Compressing disk %s with %s", disk_name, self.compressor) + exec_cmd("%s %s" % (self.compressor, full_path)) + + def print_info(self): + """ + Print the image(s) and artifacts used, for the user. + """ + msg = "The new image(s) can be found here:\n" + + extension = "direct" + {"gzip": ".gz", + "bzip2": ".bz2", + "xz": ".xz", + None: ""}.get(self.compressor) + full_path = self._full_path(self.outdir, self.parts[0].disk, extension) + msg += ' %s\n\n' % full_path + + msg += 'The following build artifacts were used to create the image(s):\n' + for part in self.parts: + if part.rootfs_dir is None: + continue + if part.mountpoint == '/': + suffix = ':' + else: + suffix = '["%s"]:' % (part.mountpoint or part.label) + rootdir = part.rootfs_dir + if rootdir in self.replaced_rootfs_paths: + rootdir = self.replaced_rootfs_paths[rootdir] + msg += ' ROOTFS_DIR%s%s\n' % (suffix.ljust(20), rootdir) + + msg += ' BOOTIMG_DIR: %s\n' % self.bootimg_dir + msg += ' KERNEL_DIR: %s\n' % self.kernel_dir + msg += ' NATIVE_SYSROOT: %s\n' % self.native_sysroot + + logger.info(msg) + + @property + def rootdev(self): + """ + Get root device name to use as a 'root' parameter + in kernel command line. + + Assume partition order same as in wks + """ + for part in self.parts: + if part.mountpoint == "/": + if part.uuid: + return "PARTUUID=%s" % part.uuid + else: + suffix = 'p' if part.disk.startswith('mmcblk') else '' + return "/dev/%s%s%-d" % (part.disk, suffix, part.realnum) + + def cleanup(self): + if self._image: + self._image.cleanup() + + # Move results to the output dir + if not os.path.exists(self.outdir): + os.makedirs(self.outdir) + + for fname in os.listdir(self.workdir): + path = os.path.join(self.workdir, fname) + if os.path.isfile(path): + shutil.move(path, os.path.join(self.outdir, fname)) + + # remove work directory + shutil.rmtree(self.workdir, ignore_errors=True) + +# Overhead of the MBR partitioning scheme (just one sector) +MBR_OVERHEAD = 1 + +# Overhead of the GPT partitioning scheme +GPT_OVERHEAD = 34 + +# Size of a sector in bytes +SECTOR_SIZE = 512 + +class PartitionedImage(): + """ + Partitioned image in a file. + """ + + def __init__(self, path, ptable_format, partitions, native_sysroot=None): + self.path = path # Path to the image file + self.numpart = 0 # Number of allocated partitions + self.realpart = 0 # Number of partitions in the partition table + self.offset = 0 # Offset of next partition (in sectors) + self.min_size = 0 # Minimum required disk size to fit + # all partitions (in bytes) + self.ptable_format = ptable_format # Partition table format + # Disk system identifier + self.identifier = random.SystemRandom().randint(1, 0xffffffff) + + self.partitions = partitions + self.partimages = [] + # Size of a sector used in calculations + self.sector_size = SECTOR_SIZE + self.native_sysroot = native_sysroot + + # calculate the real partition number, accounting for partitions not + # in the partition table and logical partitions + realnum = 0 + for part in self.partitions: + if part.no_table: + part.realnum = 0 + else: + realnum += 1 + if self.ptable_format == 'msdos' and realnum > 3 and len(partitions) > 4: + part.realnum = realnum + 1 + continue + part.realnum = realnum + + # generate parition and filesystem UUIDs + for part in self.partitions: + if not part.uuid and part.use_uuid: + if self.ptable_format == 'gpt': + part.uuid = str(uuid.uuid4()) + else: # msdos partition table + part.uuid = '%08x-%02d' % (self.identifier, part.realnum) + if not part.fsuuid: + if part.fstype == 'vfat' or part.fstype == 'msdos': + part.fsuuid = '0x' + str(uuid.uuid4())[:8].upper() + else: + part.fsuuid = str(uuid.uuid4()) + + def prepare(self, imager): + """Prepare an image. Call prepare method of all image partitions.""" + for part in self.partitions: + # need to create the filesystems in order to get their + # sizes before we can add them and do the layout. + part.prepare(imager, imager.workdir, imager.oe_builddir, + imager.rootfs_dir, imager.bootimg_dir, + imager.kernel_dir, imager.native_sysroot) + + # Converting kB to sectors for parted + part.size_sec = part.disk_size * 1024 // self.sector_size + + def layout_partitions(self): + """ Layout the partitions, meaning calculate the position of every + partition on the disk. The 'ptable_format' parameter defines the + partition table format and may be "msdos". """ + + logger.debug("Assigning %s partitions to disks", self.ptable_format) + + # The number of primary and logical partitions. Extended partition and + # partitions not listed in the table are not included. + num_real_partitions = len([p for p in self.partitions if not p.no_table]) + + # Go through partitions in the order they are added in .ks file + for num in range(len(self.partitions)): + part = self.partitions[num] + + if self.ptable_format == 'msdos' and part.part_name: + raise WicError("setting custom partition name is not " \ + "implemented for msdos partitions") + + if self.ptable_format == 'msdos' and part.part_type: + # The --part-type can also be implemented for MBR partitions, + # in which case it would map to the 1-byte "partition type" + # filed at offset 3 of the partition entry. + raise WicError("setting custom partition type is not " \ + "implemented for msdos partitions") + + # Get the disk where the partition is located + self.numpart += 1 + if not part.no_table: + self.realpart += 1 + + if self.numpart == 1: + if self.ptable_format == "msdos": + overhead = MBR_OVERHEAD + elif self.ptable_format == "gpt": + overhead = GPT_OVERHEAD + + # Skip one sector required for the partitioning scheme overhead + self.offset += overhead + + if self.realpart > 3 and num_real_partitions > 4: + # Reserve a sector for EBR for every logical partition + # before alignment is performed. + if self.ptable_format == "msdos": + self.offset += 1 + + if part.align: + # If not first partition and we do have alignment set we need + # to align the partition. + # FIXME: This leaves a empty spaces to the disk. To fill the + # gaps we could enlargea the previous partition? + + # Calc how much the alignment is off. + align_sectors = self.offset % (part.align * 1024 // self.sector_size) + + if align_sectors: + # If partition is not aligned as required, we need + # to move forward to the next alignment point + align_sectors = (part.align * 1024 // self.sector_size) - align_sectors + + logger.debug("Realignment for %s%s with %s sectors, original" + " offset %s, target alignment is %sK.", + part.disk, self.numpart, align_sectors, + self.offset, part.align) + + # increase the offset so we actually start the partition on right alignment + self.offset += align_sectors + + part.start = self.offset + self.offset += part.size_sec + + part.type = 'primary' + if not part.no_table: + part.num = self.realpart + else: + part.num = 0 + + if self.ptable_format == "msdos": + # only count the partitions that are in partition table + if num_real_partitions > 4: + if self.realpart > 3: + part.type = 'logical' + part.num = self.realpart + 1 + + logger.debug("Assigned %s to %s%d, sectors range %d-%d size %d " + "sectors (%d bytes).", part.mountpoint, part.disk, + part.num, part.start, self.offset - 1, part.size_sec, + part.size_sec * self.sector_size) + + # Once all the partitions have been layed out, we can calculate the + # minumim disk size + self.min_size = self.offset + if self.ptable_format == "gpt": + self.min_size += GPT_OVERHEAD + + self.min_size *= self.sector_size + + def _create_partition(self, device, parttype, fstype, start, size): + """ Create a partition on an image described by the 'device' object. """ + + # Start is included to the size so we need to substract one from the end. + end = start + size - 1 + logger.debug("Added '%s' partition, sectors %d-%d, size %d sectors", + parttype, start, end, size) + + cmd = "parted -s %s unit s mkpart %s" % (device, parttype) + if fstype: + cmd += " %s" % fstype + cmd += " %d %d" % (start, end) + + return exec_native_cmd(cmd, self.native_sysroot) + + def create(self): + logger.debug("Creating sparse file %s", self.path) + with open(self.path, 'w') as sparse: + os.ftruncate(sparse.fileno(), self.min_size) + + logger.debug("Initializing partition table for %s", self.path) + exec_native_cmd("parted -s %s mklabel %s" % + (self.path, self.ptable_format), self.native_sysroot) + + logger.debug("Set disk identifier %x", self.identifier) + with open(self.path, 'r+b') as img: + img.seek(0x1B8) + img.write(self.identifier.to_bytes(4, 'little')) + + logger.debug("Creating partitions") + + for part in self.partitions: + if part.num == 0: + continue + + if self.ptable_format == "msdos" and part.num == 5: + # Create an extended partition (note: extended + # partition is described in MBR and contains all + # logical partitions). The logical partitions save a + # sector for an EBR just before the start of a + # partition. The extended partition must start one + # sector before the start of the first logical + # partition. This way the first EBR is inside of the + # extended partition. Since the extended partitions + # starts a sector before the first logical partition, + # add a sector at the back, so that there is enough + # room for all logical partitions. + self._create_partition(self.path, "extended", + None, part.start - 1, + self.offset - part.start + 1) + + if part.fstype == "swap": + parted_fs_type = "linux-swap" + elif part.fstype == "vfat": + parted_fs_type = "fat32" + elif part.fstype == "msdos": + parted_fs_type = "fat16" + if not part.system_id: + part.system_id = '0x6' # FAT16 + else: + # Type for ext2/ext3/ext4/btrfs + parted_fs_type = "ext2" + + # Boot ROM of OMAP boards require vfat boot partition to have an + # even number of sectors. + if part.mountpoint == "/boot" and part.fstype in ["vfat", "msdos"] \ + and part.size_sec % 2: + logger.debug("Subtracting one sector from '%s' partition to " + "get even number of sectors for the partition", + part.mountpoint) + part.size_sec -= 1 + + self._create_partition(self.path, part.type, + parted_fs_type, part.start, part.size_sec) + + if part.part_name: + logger.debug("partition %d: set name to %s", + part.num, part.part_name) + exec_native_cmd("sgdisk --change-name=%d:%s %s" % \ + (part.num, part.part_name, + self.path), self.native_sysroot) + + if part.part_type: + logger.debug("partition %d: set type UID to %s", + part.num, part.part_type) + exec_native_cmd("sgdisk --typecode=%d:%s %s" % \ + (part.num, part.part_type, + self.path), self.native_sysroot) + + if part.uuid and self.ptable_format == "gpt": + logger.debug("partition %d: set UUID to %s", + part.num, part.uuid) + exec_native_cmd("sgdisk --partition-guid=%d:%s %s" % \ + (part.num, part.uuid, self.path), + self.native_sysroot) + + if part.label and self.ptable_format == "gpt": + logger.debug("partition %d: set name to %s", + part.num, part.label) + exec_native_cmd("parted -s %s name %d %s" % \ + (self.path, part.num, part.label), + self.native_sysroot) + + if part.active: + flag_name = "legacy_boot" if self.ptable_format == 'gpt' else "boot" + logger.debug("Set '%s' flag for partition '%s' on disk '%s'", + flag_name, part.num, self.path) + exec_native_cmd("parted -s %s set %d %s on" % \ + (self.path, part.num, flag_name), + self.native_sysroot) + if part.system_id: + exec_native_cmd("sfdisk --part-type %s %s %s" % \ + (self.path, part.num, part.system_id), + self.native_sysroot) + + def cleanup(self): + # remove partition images + for image in set(self.partimages): + os.remove(image) + + def assemble(self): + logger.debug("Installing partitions") + + for part in self.partitions: + source = part.source_file + if source: + # install source_file contents into a partition + sparse_copy(source, self.path, seek=part.start * self.sector_size) + + logger.debug("Installed %s in partition %d, sectors %d-%d, " + "size %d sectors", source, part.num, part.start, + part.start + part.size_sec - 1, part.size_sec) + + partimage = self.path + '.p%d' % part.num + os.rename(source, partimage) + self.partimages.append(partimage) diff --git a/poky/scripts/lib/wic/plugins/source/bootimg-efi.py b/poky/scripts/lib/wic/plugins/source/bootimg-efi.py new file mode 100644 index 000000000..beb74d7a7 --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/bootimg-efi.py @@ -0,0 +1,258 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# Copyright (c) 2014, 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 implements the 'bootimg-efi' source plugin class for 'wic' +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# + +import logging +import os +import shutil + +from wic import WicError +from wic.engine import get_custom_config +from wic.pluginbase import SourcePlugin +from wic.misc import (exec_cmd, exec_native_cmd, + get_bitbake_var, BOOTDD_EXTRA_SPACE) + +logger = logging.getLogger('wic') + +class BootimgEFIPlugin(SourcePlugin): + """ + Create EFI boot partition. + This plugin supports GRUB 2 and systemd-boot bootloaders. + """ + + name = 'bootimg-efi' + + @classmethod + def do_configure_grubefi(cls, creator, cr_workdir): + """ + Create loader-specific (grub-efi) config + """ + configfile = creator.ks.bootloader.configfile + custom_cfg = None + if configfile: + custom_cfg = get_custom_config(configfile) + if custom_cfg: + # Use a custom configuration for grub + grubefi_conf = custom_cfg + logger.debug("Using custom configuration file " + "%s for grub.cfg", configfile) + else: + raise WicError("configfile is specified but failed to " + "get it from %s." % configfile) + + if not custom_cfg: + # Create grub configuration using parameters from wks file + bootloader = creator.ks.bootloader + + grubefi_conf = "" + grubefi_conf += "serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1\n" + grubefi_conf += "default=boot\n" + grubefi_conf += "timeout=%s\n" % bootloader.timeout + grubefi_conf += "menuentry 'boot'{\n" + + kernel = "/bzImage" + + grubefi_conf += "linux %s root=%s rootwait %s\n" \ + % (kernel, creator.rootdev, bootloader.append) + grubefi_conf += "}\n" + + logger.debug("Writing grubefi config %s/hdd/boot/EFI/BOOT/grub.cfg", + cr_workdir) + cfg = open("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir, "w") + cfg.write(grubefi_conf) + cfg.close() + + @classmethod + def do_configure_systemdboot(cls, hdddir, creator, cr_workdir, source_params): + """ + Create loader-specific systemd-boot/gummiboot config + """ + install_cmd = "install -d %s/loader" % hdddir + exec_cmd(install_cmd) + + install_cmd = "install -d %s/loader/entries" % hdddir + exec_cmd(install_cmd) + + bootloader = creator.ks.bootloader + + loader_conf = "" + loader_conf += "default boot\n" + loader_conf += "timeout %d\n" % bootloader.timeout + + initrd = source_params.get('initrd') + + if initrd: + # obviously we need to have a common common deploy var + bootimg_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + if not bootimg_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting") + + cp_cmd = "cp %s/%s %s" % (bootimg_dir, initrd, hdddir) + exec_cmd(cp_cmd, True) + else: + logger.debug("Ignoring missing initrd") + + logger.debug("Writing systemd-boot config " + "%s/hdd/boot/loader/loader.conf", cr_workdir) + cfg = open("%s/hdd/boot/loader/loader.conf" % cr_workdir, "w") + cfg.write(loader_conf) + cfg.close() + + configfile = creator.ks.bootloader.configfile + custom_cfg = None + if configfile: + custom_cfg = get_custom_config(configfile) + if custom_cfg: + # Use a custom configuration for systemd-boot + boot_conf = custom_cfg + logger.debug("Using custom configuration file " + "%s for systemd-boots's boot.conf", configfile) + else: + raise WicError("configfile is specified but failed to " + "get it from %s.", configfile) + + if not custom_cfg: + # Create systemd-boot configuration using parameters from wks file + kernel = "/bzImage" + + boot_conf = "" + boot_conf += "title boot\n" + boot_conf += "linux %s\n" % kernel + boot_conf += "options LABEL=Boot root=%s %s\n" % \ + (creator.rootdev, bootloader.append) + + if initrd: + boot_conf += "initrd /%s\n" % initrd + + logger.debug("Writing systemd-boot config " + "%s/hdd/boot/loader/entries/boot.conf", cr_workdir) + cfg = open("%s/hdd/boot/loader/entries/boot.conf" % cr_workdir, "w") + cfg.write(boot_conf) + cfg.close() + + + @classmethod + def do_configure_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + native_sysroot): + """ + Called before do_prepare_partition(), creates loader-specific config + """ + hdddir = "%s/hdd/boot" % cr_workdir + + install_cmd = "install -d %s/EFI/BOOT" % hdddir + exec_cmd(install_cmd) + + try: + if source_params['loader'] == 'grub-efi': + cls.do_configure_grubefi(creator, cr_workdir) + elif source_params['loader'] == 'systemd-boot': + cls.do_configure_systemdboot(hdddir, creator, cr_workdir, source_params) + else: + raise WicError("unrecognized bootimg-efi loader: %s" % source_params['loader']) + except KeyError: + raise WicError("bootimg-efi requires a loader, none specified") + + + @classmethod + def do_prepare_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + rootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + In this case, prepare content for an EFI (grub) boot partition. + """ + if not kernel_dir: + kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + if not kernel_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting") + + staging_kernel_dir = kernel_dir + + hdddir = "%s/hdd/boot" % cr_workdir + + install_cmd = "install -m 0644 %s/bzImage %s/bzImage" % \ + (staging_kernel_dir, hdddir) + exec_cmd(install_cmd) + + + try: + if source_params['loader'] == 'grub-efi': + shutil.copyfile("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir, + "%s/grub.cfg" % cr_workdir) + for mod in [x for x in os.listdir(kernel_dir) if x.startswith("grub-efi-")]: + cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, mod[9:]) + exec_cmd(cp_cmd, True) + shutil.move("%s/grub.cfg" % cr_workdir, + "%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir) + elif source_params['loader'] == 'systemd-boot': + for mod in [x for x in os.listdir(kernel_dir) if x.startswith("systemd-")]: + cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, mod[8:]) + exec_cmd(cp_cmd, True) + else: + raise WicError("unrecognized bootimg-efi loader: %s" % + source_params['loader']) + except KeyError: + raise WicError("bootimg-efi requires a loader, none specified") + + startup = os.path.join(kernel_dir, "startup.nsh") + if os.path.exists(startup): + cp_cmd = "cp %s %s/" % (startup, hdddir) + exec_cmd(cp_cmd, True) + + du_cmd = "du -bks %s" % hdddir + out = exec_cmd(du_cmd) + blocks = int(out.split()[0]) + + extra_blocks = part.get_extra_block_count(blocks) + + if extra_blocks < BOOTDD_EXTRA_SPACE: + extra_blocks = BOOTDD_EXTRA_SPACE + + blocks += extra_blocks + + logger.debug("Added %d extra blocks to %s to get to %d total blocks", + extra_blocks, part.mountpoint, blocks) + + # dosfs image, created by mkdosfs + bootimg = "%s/boot.img" % cr_workdir + + dosfs_cmd = "mkdosfs -n efi -i %s -C %s %d" % \ + (part.fsuuid, bootimg, blocks) + exec_native_cmd(dosfs_cmd, native_sysroot) + + mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir) + exec_native_cmd(mcopy_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % bootimg + exec_cmd(chmod_cmd) + + du_cmd = "du -Lbks %s" % bootimg + out = exec_cmd(du_cmd) + bootimg_size = out.split()[0] + + part.size = int(bootimg_size) + part.source_file = bootimg diff --git a/poky/scripts/lib/wic/plugins/source/bootimg-partition.py b/poky/scripts/lib/wic/plugins/source/bootimg-partition.py new file mode 100644 index 000000000..b239fc0b4 --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/bootimg-partition.py @@ -0,0 +1,132 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# 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 implements the 'bootimg-partition' source plugin class for +# 'wic'. The plugin creates an image of boot partition, copying over +# files listed in IMAGE_BOOT_FILES bitbake variable. +# +# AUTHORS +# Maciej Borzecki <maciej.borzecki (at] open-rnd.pl> +# + +import logging +import os +import re + +from glob import glob + +from wic import WicError +from wic.pluginbase import SourcePlugin +from wic.misc import exec_cmd, get_bitbake_var + +logger = logging.getLogger('wic') + +class BootimgPartitionPlugin(SourcePlugin): + """ + Create an image of boot partition, copying over files + listed in IMAGE_BOOT_FILES bitbake variable. + """ + + name = 'bootimg-partition' + + @classmethod + def do_prepare_partition(cls, part, source_params, cr, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + rootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + In this case, does the following: + - sets up a vfat partition + - copies all files listed in IMAGE_BOOT_FILES variable + """ + hdddir = "%s/boot.%d" % (cr_workdir, part.lineno) + install_cmd = "install -d %s" % hdddir + exec_cmd(install_cmd) + + if not kernel_dir: + kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + if not kernel_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting") + + logger.debug('Kernel dir: %s', bootimg_dir) + + boot_files = None + for (fmt, id) in (("_uuid-%s", part.uuid), ("_label-%s", part.label), (None, None)): + if fmt: + var = fmt % id + else: + var = "" + + boot_files = get_bitbake_var("IMAGE_BOOT_FILES" + var) + if boot_files is not None: + break + + if boot_files is None: + raise WicError('No boot files defined, IMAGE_BOOT_FILES unset for entry #%d' % part.lineno) + + logger.debug('Boot files: %s', boot_files) + + # list of tuples (src_name, dst_name) + deploy_files = [] + for src_entry in re.findall(r'[\w;\-\./\*]+', boot_files): + if ';' in src_entry: + dst_entry = tuple(src_entry.split(';')) + if not dst_entry[0] or not dst_entry[1]: + raise WicError('Malformed boot file entry: %s' % src_entry) + else: + dst_entry = (src_entry, src_entry) + + logger.debug('Destination entry: %r', dst_entry) + deploy_files.append(dst_entry) + + for deploy_entry in deploy_files: + src, dst = deploy_entry + install_task = [] + if '*' in src: + # by default install files under their basename + entry_name_fn = os.path.basename + if dst != src: + # unless a target name was given, then treat name + # as a directory and append a basename + entry_name_fn = lambda name: \ + os.path.join(dst, + os.path.basename(name)) + + srcs = glob(os.path.join(kernel_dir, src)) + + logger.debug('Globbed sources: %s', ', '.join(srcs)) + for entry in srcs: + entry_dst_name = entry_name_fn(entry) + install_task.append((entry, + os.path.join(hdddir, + entry_dst_name))) + else: + install_task = [(os.path.join(kernel_dir, src), + os.path.join(hdddir, dst))] + + for task in install_task: + src_path, dst_path = task + logger.debug('Install %s as %s', + os.path.basename(src_path), dst_path) + install_cmd = "install -m 0644 -D %s %s" \ + % (src_path, dst_path) + exec_cmd(install_cmd) + + logger.debug('Prepare boot partition using rootfs in %s', hdddir) + part.prepare_rootfs(cr_workdir, oe_builddir, hdddir, + native_sysroot, False) diff --git a/poky/scripts/lib/wic/plugins/source/bootimg-pcbios.py b/poky/scripts/lib/wic/plugins/source/bootimg-pcbios.py new file mode 100644 index 000000000..d599112dd --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/bootimg-pcbios.py @@ -0,0 +1,207 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# Copyright (c) 2014, 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 implements the 'bootimg-pcbios' source plugin class for 'wic' +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# + +import logging +import os + +from wic import WicError +from wic.engine import get_custom_config +from wic.pluginbase import SourcePlugin +from wic.misc import (exec_cmd, exec_native_cmd, + get_bitbake_var, BOOTDD_EXTRA_SPACE) + +logger = logging.getLogger('wic') + +class BootimgPcbiosPlugin(SourcePlugin): + """ + Create MBR boot partition and install syslinux on it. + """ + + name = 'bootimg-pcbios' + + @classmethod + def _get_bootimg_dir(cls, bootimg_dir, dirname): + """ + Check if dirname exists in default bootimg_dir or in STAGING_DIR. + """ + for result in (bootimg_dir, get_bitbake_var("STAGING_DATADIR")): + if os.path.exists("%s/%s" % (result, dirname)): + return result + + raise WicError("Couldn't find correct bootimg_dir, exiting") + + @classmethod + def do_install_disk(cls, disk, disk_name, creator, workdir, oe_builddir, + bootimg_dir, kernel_dir, native_sysroot): + """ + Called after all partitions have been prepared and assembled into a + disk image. In this case, we install the MBR. + """ + bootimg_dir = cls._get_bootimg_dir(bootimg_dir, 'syslinux') + mbrfile = "%s/syslinux/" % bootimg_dir + if creator.ptable_format == 'msdos': + mbrfile += "mbr.bin" + elif creator.ptable_format == 'gpt': + mbrfile += "gptmbr.bin" + else: + raise WicError("Unsupported partition table: %s" % + creator.ptable_format) + + if not os.path.exists(mbrfile): + raise WicError("Couldn't find %s. If using the -e option, do you " + "have the right MACHINE set in local.conf? If not, " + "is the bootimg_dir path correct?" % mbrfile) + + full_path = creator._full_path(workdir, disk_name, "direct") + logger.debug("Installing MBR on disk %s as %s with size %s bytes", + disk_name, full_path, disk.min_size) + + dd_cmd = "dd if=%s of=%s conv=notrunc" % (mbrfile, full_path) + exec_cmd(dd_cmd, native_sysroot) + + @classmethod + def do_configure_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + native_sysroot): + """ + Called before do_prepare_partition(), creates syslinux config + """ + hdddir = "%s/hdd/boot" % cr_workdir + + install_cmd = "install -d %s" % hdddir + exec_cmd(install_cmd) + + bootloader = creator.ks.bootloader + + custom_cfg = None + if bootloader.configfile: + custom_cfg = get_custom_config(bootloader.configfile) + if custom_cfg: + # Use a custom configuration for grub + syslinux_conf = custom_cfg + logger.debug("Using custom configuration file %s " + "for syslinux.cfg", bootloader.configfile) + else: + raise WicError("configfile is specified but failed to " + "get it from %s." % bootloader.configfile) + + if not custom_cfg: + # Create syslinux configuration using parameters from wks file + splash = os.path.join(cr_workdir, "/hdd/boot/splash.jpg") + if os.path.exists(splash): + splashline = "menu background splash.jpg" + else: + splashline = "" + + syslinux_conf = "" + syslinux_conf += "PROMPT 0\n" + syslinux_conf += "TIMEOUT " + str(bootloader.timeout) + "\n" + syslinux_conf += "\n" + syslinux_conf += "ALLOWOPTIONS 1\n" + syslinux_conf += "SERIAL 0 115200\n" + syslinux_conf += "\n" + if splashline: + syslinux_conf += "%s\n" % splashline + syslinux_conf += "DEFAULT boot\n" + syslinux_conf += "LABEL boot\n" + + kernel = "/vmlinuz" + syslinux_conf += "KERNEL " + kernel + "\n" + + syslinux_conf += "APPEND label=boot root=%s %s\n" % \ + (creator.rootdev, bootloader.append) + + logger.debug("Writing syslinux config %s/hdd/boot/syslinux.cfg", + cr_workdir) + cfg = open("%s/hdd/boot/syslinux.cfg" % cr_workdir, "w") + cfg.write(syslinux_conf) + cfg.close() + + @classmethod + def do_prepare_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + rootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + In this case, prepare content for legacy bios boot partition. + """ + bootimg_dir = cls._get_bootimg_dir(bootimg_dir, 'syslinux') + + staging_kernel_dir = kernel_dir + + hdddir = "%s/hdd/boot" % cr_workdir + + cmds = ("install -m 0644 %s/bzImage %s/vmlinuz" % + (staging_kernel_dir, hdddir), + "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" % + (bootimg_dir, hdddir), + "install -m 0644 %s/syslinux/vesamenu.c32 %s/vesamenu.c32" % + (bootimg_dir, hdddir), + "install -m 444 %s/syslinux/libcom32.c32 %s/libcom32.c32" % + (bootimg_dir, hdddir), + "install -m 444 %s/syslinux/libutil.c32 %s/libutil.c32" % + (bootimg_dir, hdddir)) + + for install_cmd in cmds: + exec_cmd(install_cmd) + + du_cmd = "du -bks %s" % hdddir + out = exec_cmd(du_cmd) + blocks = int(out.split()[0]) + + extra_blocks = part.get_extra_block_count(blocks) + + if extra_blocks < BOOTDD_EXTRA_SPACE: + extra_blocks = BOOTDD_EXTRA_SPACE + + blocks += extra_blocks + + logger.debug("Added %d extra blocks to %s to get to %d total blocks", + extra_blocks, part.mountpoint, blocks) + + # dosfs image, created by mkdosfs + bootimg = "%s/boot%s.img" % (cr_workdir, part.lineno) + + dosfs_cmd = "mkdosfs -n boot -i %s -S 512 -C %s %d" % \ + (part.fsuuid, bootimg, blocks) + exec_native_cmd(dosfs_cmd, native_sysroot) + + mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir) + exec_native_cmd(mcopy_cmd, native_sysroot) + + syslinux_cmd = "syslinux %s" % bootimg + exec_native_cmd(syslinux_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % bootimg + exec_cmd(chmod_cmd) + + du_cmd = "du -Lbks %s" % bootimg + out = exec_cmd(du_cmd) + bootimg_size = out.split()[0] + + part.size = int(bootimg_size) + part.source_file = bootimg diff --git a/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py b/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py new file mode 100644 index 000000000..d6bd3bff7 --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py @@ -0,0 +1,466 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- + +# 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 implements the 'isoimage-isohybrid' source plugin class for 'wic' +# +# AUTHORS +# Mihaly Varga <mihaly.varga (at] ni.com> + +import glob +import logging +import os +import re +import shutil + +from wic import WicError +from wic.engine import get_custom_config +from wic.pluginbase import SourcePlugin +from wic.misc import exec_cmd, exec_native_cmd, get_bitbake_var + +logger = logging.getLogger('wic') + +class IsoImagePlugin(SourcePlugin): + """ + Create a bootable ISO image + + This plugin creates a hybrid, legacy and EFI bootable ISO image. The + generated image can be used on optical media as well as USB media. + + Legacy boot uses syslinux and EFI boot uses grub or gummiboot (not + implemented yet) as bootloader. The plugin creates the directories required + by bootloaders and populates them by creating and configuring the + bootloader files. + + Example kickstart file: + part /boot --source isoimage-isohybrid --sourceparams="loader=grub-efi, \\ + image_name= IsoImage" --ondisk cd --label LIVECD --fstype=ext2 + bootloader --timeout=10 --append=" " + + In --sourceparams "loader" specifies the bootloader used for booting in EFI + mode, while "image_name" specifies the name of the generated image. In the + example above, wic creates an ISO image named IsoImage-cd.direct (default + extension added by direct imeger plugin) and a file named IsoImage-cd.iso + """ + + name = 'isoimage-isohybrid' + + @classmethod + def do_configure_syslinux(cls, creator, cr_workdir): + """ + Create loader-specific (syslinux) config + """ + splash = os.path.join(cr_workdir, "ISO/boot/splash.jpg") + if os.path.exists(splash): + splashline = "menu background splash.jpg" + else: + splashline = "" + + bootloader = creator.ks.bootloader + + syslinux_conf = "" + syslinux_conf += "PROMPT 0\n" + syslinux_conf += "TIMEOUT %s \n" % (bootloader.timeout or 10) + syslinux_conf += "\n" + syslinux_conf += "ALLOWOPTIONS 1\n" + syslinux_conf += "SERIAL 0 115200\n" + syslinux_conf += "\n" + if splashline: + syslinux_conf += "%s\n" % splashline + syslinux_conf += "DEFAULT boot\n" + syslinux_conf += "LABEL boot\n" + + kernel = "/bzImage" + syslinux_conf += "KERNEL " + kernel + "\n" + syslinux_conf += "APPEND initrd=/initrd LABEL=boot %s\n" \ + % bootloader.append + + logger.debug("Writing syslinux config %s/ISO/isolinux/isolinux.cfg", + cr_workdir) + + with open("%s/ISO/isolinux/isolinux.cfg" % cr_workdir, "w") as cfg: + cfg.write(syslinux_conf) + + @classmethod + def do_configure_grubefi(cls, part, creator, target_dir): + """ + Create loader-specific (grub-efi) config + """ + configfile = creator.ks.bootloader.configfile + if configfile: + grubefi_conf = get_custom_config(configfile) + if grubefi_conf: + logger.debug("Using custom configuration file %s for grub.cfg", + configfile) + else: + raise WicError("configfile is specified " + "but failed to get it from %s", configfile) + else: + splash = os.path.join(target_dir, "splash.jpg") + if os.path.exists(splash): + splashline = "menu background splash.jpg" + else: + splashline = "" + + bootloader = creator.ks.bootloader + + grubefi_conf = "" + grubefi_conf += "serial --unit=0 --speed=115200 --word=8 " + grubefi_conf += "--parity=no --stop=1\n" + grubefi_conf += "default=boot\n" + grubefi_conf += "timeout=%s\n" % (bootloader.timeout or 10) + grubefi_conf += "\n" + grubefi_conf += "search --set=root --label %s " % part.label + grubefi_conf += "\n" + grubefi_conf += "menuentry 'boot'{\n" + + kernel = "/bzImage" + + grubefi_conf += "linux %s rootwait %s\n" \ + % (kernel, bootloader.append) + grubefi_conf += "initrd /initrd \n" + grubefi_conf += "}\n" + + if splashline: + grubefi_conf += "%s\n" % splashline + + cfg_path = os.path.join(target_dir, "grub.cfg") + logger.debug("Writing grubefi config %s", cfg_path) + + with open(cfg_path, "w") as cfg: + cfg.write(grubefi_conf) + + @staticmethod + def _build_initramfs_path(rootfs_dir, cr_workdir): + """ + Create path for initramfs image + """ + + initrd = get_bitbake_var("INITRD_LIVE") or get_bitbake_var("INITRD") + if not initrd: + initrd_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + if not initrd_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting.") + + image_name = get_bitbake_var("IMAGE_BASENAME") + if not image_name: + raise WicError("Couldn't find IMAGE_BASENAME, exiting.") + + image_type = get_bitbake_var("INITRAMFS_FSTYPES") + if not image_type: + raise WicError("Couldn't find INITRAMFS_FSTYPES, exiting.") + + machine = os.path.basename(initrd_dir) + + pattern = '%s/%s*%s.%s' % (initrd_dir, image_name, machine, image_type) + files = glob.glob(pattern) + if files: + initrd = files[0] + + if not initrd or not os.path.exists(initrd): + # Create initrd from rootfs directory + initrd = "%s/initrd.cpio.gz" % cr_workdir + initrd_dir = "%s/INITRD" % cr_workdir + shutil.copytree("%s" % rootfs_dir, \ + "%s" % initrd_dir, symlinks=True) + + if os.path.isfile("%s/init" % rootfs_dir): + shutil.copy2("%s/init" % rootfs_dir, "%s/init" % initrd_dir) + elif os.path.lexists("%s/init" % rootfs_dir): + os.symlink(os.readlink("%s/init" % rootfs_dir), \ + "%s/init" % initrd_dir) + elif os.path.isfile("%s/sbin/init" % rootfs_dir): + shutil.copy2("%s/sbin/init" % rootfs_dir, \ + "%s" % initrd_dir) + elif os.path.lexists("%s/sbin/init" % rootfs_dir): + os.symlink(os.readlink("%s/sbin/init" % rootfs_dir), \ + "%s/init" % initrd_dir) + else: + raise WicError("Couldn't find or build initrd, exiting.") + + exec_cmd("cd %s && find . | cpio -o -H newc -R +0:+0 >./initrd.cpio " \ + % initrd_dir, as_shell=True) + exec_cmd("gzip -f -9 -c %s/initrd.cpio > %s" \ + % (cr_workdir, initrd), as_shell=True) + shutil.rmtree(initrd_dir) + + return initrd + + @classmethod + def do_configure_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + native_sysroot): + """ + Called before do_prepare_partition(), creates loader-specific config + """ + isodir = "%s/ISO/" % cr_workdir + + if os.path.exists(isodir): + shutil.rmtree(isodir) + + install_cmd = "install -d %s " % isodir + exec_cmd(install_cmd) + + # Overwrite the name of the created image + logger.debug(source_params) + if 'image_name' in source_params and \ + source_params['image_name'].strip(): + creator.name = source_params['image_name'].strip() + logger.debug("The name of the image is: %s", creator.name) + + @classmethod + def do_prepare_partition(cls, part, source_params, creator, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + rootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + In this case, prepare content for a bootable ISO image. + """ + + isodir = "%s/ISO" % cr_workdir + + if part.rootfs_dir is None: + if not 'ROOTFS_DIR' in rootfs_dir: + raise WicError("Couldn't find --rootfs-dir, exiting.") + rootfs_dir = rootfs_dir['ROOTFS_DIR'] + else: + if part.rootfs_dir in rootfs_dir: + rootfs_dir = rootfs_dir[part.rootfs_dir] + elif part.rootfs_dir: + rootfs_dir = part.rootfs_dir + else: + raise WicError("Couldn't find --rootfs-dir=%s connection " + "or it is not a valid path, exiting." % + part.rootfs_dir) + + if not os.path.isdir(rootfs_dir): + rootfs_dir = get_bitbake_var("IMAGE_ROOTFS") + if not os.path.isdir(rootfs_dir): + raise WicError("Couldn't find IMAGE_ROOTFS, exiting.") + + part.rootfs_dir = rootfs_dir + + # Prepare rootfs.img + deploy_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + img_iso_dir = get_bitbake_var("ISODIR") + rootfs_img = "%s/rootfs.img" % img_iso_dir + if not os.path.isfile(rootfs_img): + # check if rootfs.img is in deploydir + deploy_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + image_name = get_bitbake_var("IMAGE_LINK_NAME") + rootfs_img = "%s/%s.%s" \ + % (deploy_dir, image_name, part.fstype) + + if not os.path.isfile(rootfs_img): + # create image file with type specified by --fstype + # which contains rootfs + du_cmd = "du -bks %s" % rootfs_dir + out = exec_cmd(du_cmd) + part.size = int(out.split()[0]) + part.extra_space = 0 + part.overhead_factor = 1.2 + part.prepare_rootfs(cr_workdir, oe_builddir, rootfs_dir, \ + native_sysroot) + rootfs_img = part.source_file + + install_cmd = "install -m 0644 %s %s/rootfs.img" \ + % (rootfs_img, isodir) + exec_cmd(install_cmd) + + # Remove the temporary file created by part.prepare_rootfs() + if os.path.isfile(part.source_file): + os.remove(part.source_file) + + # Support using a different initrd other than default + if source_params.get('initrd'): + initrd = source_params['initrd'] + if not deploy_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting") + cp_cmd = "cp %s/%s %s" % (deploy_dir, initrd, cr_workdir) + exec_cmd(cp_cmd) + else: + # Prepare initial ramdisk + initrd = "%s/initrd" % deploy_dir + if not os.path.isfile(initrd): + initrd = "%s/initrd" % img_iso_dir + if not os.path.isfile(initrd): + initrd = cls._build_initramfs_path(rootfs_dir, cr_workdir) + + install_cmd = "install -m 0644 %s %s/initrd" % (initrd, isodir) + exec_cmd(install_cmd) + + # Remove the temporary file created by _build_initramfs_path function + if os.path.isfile("%s/initrd.cpio.gz" % cr_workdir): + os.remove("%s/initrd.cpio.gz" % cr_workdir) + + # Install bzImage + install_cmd = "install -m 0644 %s/bzImage %s/bzImage" % \ + (kernel_dir, isodir) + exec_cmd(install_cmd) + + #Create bootloader for efi boot + try: + target_dir = "%s/EFI/BOOT" % isodir + if os.path.exists(target_dir): + shutil.rmtree(target_dir) + + os.makedirs(target_dir) + + if source_params['loader'] == 'grub-efi': + # Builds bootx64.efi/bootia32.efi if ISODIR didn't exist or + # didn't contains it + target_arch = get_bitbake_var("TARGET_SYS") + if not target_arch: + raise WicError("Coludn't find target architecture") + + if re.match("x86_64", target_arch): + grub_image = "grub-efi-bootx64.efi" + elif re.match('i.86', target_arch): + grub_image = "grub-efi-bootia32.efi" + else: + raise WicError("grub-efi is incompatible with target %s" % + target_arch) + + grub_target = os.path.join(target_dir, grub_image) + if not os.path.isfile(grub_target): + grub_src = os.path.join(deploy_dir, grub_image) + if not os.path.exists(grub_src): + raise WicError("Grub loader %s is not found in %s. " + "Please build grub-efi first" % (grub_image, deploy_dir)) + shutil.copy(grub_src, grub_target) + + if not os.path.isfile(os.path.join(target_dir, "boot.cfg")): + cls.do_configure_grubefi(part, creator, target_dir) + + else: + raise WicError("unrecognized bootimg-efi loader: %s" % + source_params['loader']) + except KeyError: + raise WicError("bootimg-efi requires a loader, none specified") + + # Create efi.img that contains bootloader files for EFI booting + # if ISODIR didn't exist or didn't contains it + if os.path.isfile("%s/efi.img" % img_iso_dir): + install_cmd = "install -m 0644 %s/efi.img %s/efi.img" % \ + (img_iso_dir, isodir) + exec_cmd(install_cmd) + else: + du_cmd = "du -bks %s/EFI" % isodir + out = exec_cmd(du_cmd) + blocks = int(out.split()[0]) + # Add some extra space for file system overhead + blocks += 100 + logger.debug("Added 100 extra blocks to %s to get to %d " + "total blocks", part.mountpoint, blocks) + + # dosfs image for EFI boot + bootimg = "%s/efi.img" % isodir + + dosfs_cmd = 'mkfs.vfat -n "EFIimg" -S 512 -C %s %d' \ + % (bootimg, blocks) + exec_native_cmd(dosfs_cmd, native_sysroot) + + mmd_cmd = "mmd -i %s ::/EFI" % bootimg + exec_native_cmd(mmd_cmd, native_sysroot) + + mcopy_cmd = "mcopy -i %s -s %s/EFI/* ::/EFI/" \ + % (bootimg, isodir) + exec_native_cmd(mcopy_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % bootimg + exec_cmd(chmod_cmd) + + # Prepare files for legacy boot + syslinux_dir = get_bitbake_var("STAGING_DATADIR") + if not syslinux_dir: + raise WicError("Couldn't find STAGING_DATADIR, exiting.") + + if os.path.exists("%s/isolinux" % isodir): + shutil.rmtree("%s/isolinux" % isodir) + + install_cmd = "install -d %s/isolinux" % isodir + exec_cmd(install_cmd) + + cls.do_configure_syslinux(creator, cr_workdir) + + install_cmd = "install -m 444 %s/syslinux/ldlinux.sys " % syslinux_dir + install_cmd += "%s/isolinux/ldlinux.sys" % isodir + exec_cmd(install_cmd) + + install_cmd = "install -m 444 %s/syslinux/isohdpfx.bin " % syslinux_dir + install_cmd += "%s/isolinux/isohdpfx.bin" % isodir + exec_cmd(install_cmd) + + install_cmd = "install -m 644 %s/syslinux/isolinux.bin " % syslinux_dir + install_cmd += "%s/isolinux/isolinux.bin" % isodir + exec_cmd(install_cmd) + + install_cmd = "install -m 644 %s/syslinux/ldlinux.c32 " % syslinux_dir + install_cmd += "%s/isolinux/ldlinux.c32" % isodir + exec_cmd(install_cmd) + + #create ISO image + iso_img = "%s/tempiso_img.iso" % cr_workdir + iso_bootimg = "isolinux/isolinux.bin" + iso_bootcat = "isolinux/boot.cat" + efi_img = "efi.img" + + mkisofs_cmd = "mkisofs -V %s " % part.label + mkisofs_cmd += "-o %s -U " % iso_img + mkisofs_cmd += "-J -joliet-long -r -iso-level 2 -b %s " % iso_bootimg + mkisofs_cmd += "-c %s -no-emul-boot -boot-load-size 4 " % iso_bootcat + mkisofs_cmd += "-boot-info-table -eltorito-alt-boot " + mkisofs_cmd += "-eltorito-platform 0xEF -eltorito-boot %s " % efi_img + mkisofs_cmd += "-no-emul-boot %s " % isodir + + logger.debug("running command: %s", mkisofs_cmd) + exec_native_cmd(mkisofs_cmd, native_sysroot) + + shutil.rmtree(isodir) + + du_cmd = "du -Lbks %s" % iso_img + out = exec_cmd(du_cmd) + isoimg_size = int(out.split()[0]) + + part.size = isoimg_size + part.source_file = iso_img + + @classmethod + def do_install_disk(cls, disk, disk_name, creator, workdir, oe_builddir, + bootimg_dir, kernel_dir, native_sysroot): + """ + Called after all partitions have been prepared and assembled into a + disk image. In this case, we insert/modify the MBR using isohybrid + utility for booting via BIOS from disk storage devices. + """ + + iso_img = "%s.p1" % disk.path + full_path = creator._full_path(workdir, disk_name, "direct") + full_path_iso = creator._full_path(workdir, disk_name, "iso") + + isohybrid_cmd = "isohybrid -u %s" % iso_img + logger.debug("running command: %s", isohybrid_cmd) + exec_native_cmd(isohybrid_cmd, native_sysroot) + + # Replace the image created by direct plugin with the one created by + # mkisofs command. This is necessary because the iso image created by + # mkisofs has a very specific MBR is system area of the ISO image, and + # direct plugin adds and configures an another MBR. + logger.debug("Replaceing the image created by direct plugin\n") + os.remove(disk.path) + shutil.copy2(iso_img, full_path_iso) + shutil.copy2(full_path_iso, full_path) diff --git a/poky/scripts/lib/wic/plugins/source/rawcopy.py b/poky/scripts/lib/wic/plugins/source/rawcopy.py new file mode 100644 index 000000000..e86398ac8 --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/rawcopy.py @@ -0,0 +1,91 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# 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. +# + +import logging +import os + +from wic import WicError +from wic.pluginbase import SourcePlugin +from wic.misc import exec_cmd, get_bitbake_var +from wic.filemap import sparse_copy + +logger = logging.getLogger('wic') + +class RawCopyPlugin(SourcePlugin): + """ + Populate partition content from raw image file. + """ + + name = 'rawcopy' + + @staticmethod + def do_image_label(fstype, dst, label): + if fstype.startswith('ext'): + cmd = 'tune2fs -L %s %s' % (label, dst) + elif fstype in ('msdos', 'vfat'): + cmd = 'dosfslabel %s %s' % (dst, label) + elif fstype == 'btrfs': + cmd = 'btrfs filesystem label %s %s' % (dst, label) + elif fstype == 'swap': + cmd = 'mkswap -L %s %s' % (label, dst) + elif fstype == 'squashfs': + raise WicError("It's not possible to update a squashfs " + "filesystem label '%s'" % (label)) + else: + raise WicError("Cannot update filesystem label: " + "Unknown fstype: '%s'" % (fstype)) + + exec_cmd(cmd) + + @classmethod + def do_prepare_partition(cls, part, source_params, cr, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + rootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + """ + if not kernel_dir: + kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE") + if not kernel_dir: + raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting") + + logger.debug('Kernel dir: %s', kernel_dir) + + if 'file' not in source_params: + raise WicError("No file specified") + + src = os.path.join(kernel_dir, source_params['file']) + dst = os.path.join(cr_workdir, "%s.%s" % (source_params['file'], part.lineno)) + + if 'skip' in source_params: + sparse_copy(src, dst, skip=int(source_params['skip'])) + else: + sparse_copy(src, dst) + + # get the size in the right units for kickstart (kB) + du_cmd = "du -Lbks %s" % dst + out = exec_cmd(du_cmd) + filesize = int(out.split()[0]) + + if filesize > part.size: + part.size = filesize + + if part.label: + RawCopyPlugin.do_image_label(part.fstype, dst, part.label) + + part.source_file = dst diff --git a/poky/scripts/lib/wic/plugins/source/rootfs.py b/poky/scripts/lib/wic/plugins/source/rootfs.py new file mode 100644 index 000000000..aec720fb2 --- /dev/null +++ b/poky/scripts/lib/wic/plugins/source/rootfs.py @@ -0,0 +1,126 @@ +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +# +# Copyright (c) 2014, 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 implements the 'rootfs' source plugin class for 'wic' +# +# AUTHORS +# Tom Zanussi <tom.zanussi (at] linux.intel.com> +# Joao Henrique Ferreira de Freitas <joaohf (at] gmail.com> +# + +import logging +import os +import shutil +import sys + +from oe.path import copyhardlinktree + +from wic import WicError +from wic.pluginbase import SourcePlugin +from wic.misc import get_bitbake_var + +logger = logging.getLogger('wic') + +class RootfsPlugin(SourcePlugin): + """ + Populate partition content from a rootfs directory. + """ + + name = 'rootfs' + + @staticmethod + def __get_rootfs_dir(rootfs_dir): + if os.path.isdir(rootfs_dir): + return os.path.realpath(rootfs_dir) + + image_rootfs_dir = get_bitbake_var("IMAGE_ROOTFS", rootfs_dir) + if not os.path.isdir(image_rootfs_dir): + raise WicError("No valid artifact IMAGE_ROOTFS from image " + "named %s has been found at %s, exiting." % + (rootfs_dir, image_rootfs_dir)) + + return os.path.realpath(image_rootfs_dir) + + @classmethod + def do_prepare_partition(cls, part, source_params, cr, cr_workdir, + oe_builddir, bootimg_dir, kernel_dir, + krootfs_dir, native_sysroot): + """ + Called to do the actual content population for a partition i.e. it + 'prepares' the partition to be incorporated into the image. + In this case, prepare content for legacy bios boot partition. + """ + if part.rootfs_dir is None: + if not 'ROOTFS_DIR' in krootfs_dir: + raise WicError("Couldn't find --rootfs-dir, exiting") + + rootfs_dir = krootfs_dir['ROOTFS_DIR'] + else: + if part.rootfs_dir in krootfs_dir: + rootfs_dir = krootfs_dir[part.rootfs_dir] + elif part.rootfs_dir: + rootfs_dir = part.rootfs_dir + else: + raise WicError("Couldn't find --rootfs-dir=%s connection or " + "it is not a valid path, exiting" % part.rootfs_dir) + + part.rootfs_dir = cls.__get_rootfs_dir(rootfs_dir) + + new_rootfs = None + # Handle excluded paths. + if part.exclude_path is not None: + # We need a new rootfs directory we can delete files from. Copy to + # workdir. + new_rootfs = os.path.realpath(os.path.join(cr_workdir, "rootfs%d" % part.lineno)) + + if os.path.lexists(new_rootfs): + shutil.rmtree(os.path.join(new_rootfs)) + + copyhardlinktree(part.rootfs_dir, new_rootfs) + + for orig_path in part.exclude_path: + path = orig_path + if os.path.isabs(path): + logger.error("Must be relative: --exclude-path=%s" % orig_path) + sys.exit(1) + + full_path = os.path.realpath(os.path.join(new_rootfs, path)) + + # Disallow climbing outside of parent directory using '..', + # because doing so could be quite disastrous (we will delete the + # directory). + if not full_path.startswith(new_rootfs): + logger.error("'%s' points to a path outside the rootfs" % orig_path) + sys.exit(1) + + if path.endswith(os.sep): + # Delete content only. + for entry in os.listdir(full_path): + full_entry = os.path.join(full_path, entry) + if os.path.isdir(full_entry) and not os.path.islink(full_entry): + shutil.rmtree(full_entry) + else: + os.remove(full_entry) + else: + # Delete whole directory. + shutil.rmtree(full_path) + + part.prepare_rootfs(cr_workdir, oe_builddir, + new_rootfs or part.rootfs_dir, native_sysroot) |
