256 lines
9.2 KiB
Python
256 lines
9.2 KiB
Python
#!/usr/bin/python -tt
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#
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# Copyright (c) 2011 Intel, Inc.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation; version 2 of the License
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc., 59
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# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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import os
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import shutil
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import tempfile
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from mic import chroot, msger
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from mic.utils import misc, fs_related, errors, cmdln
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from mic.conf import configmgr
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from mic.plugin import pluginmgr
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from mic.imager.loop import LoopImageCreator, load_mountpoints
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from mic.pluginbase import ImagerPlugin
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class LoopPlugin(ImagerPlugin):
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name = 'loop'
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@classmethod
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@cmdln.option("--compress-disk-image", dest="compress_image",
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type='choice', choices=("gz", "bz2"), default=None,
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help="Same with --compress-image")
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# alias to compress-image for compatibility
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@cmdln.option("--compress-image", dest="compress_image",
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type='choice', choices=("gz", "bz2"), default=None,
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help="Compress all loop images with 'gz' or 'bz2'")
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@cmdln.option("--shrink", action='store_true', default=False,
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help="Whether to shrink loop images to minimal size")
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def do_create(self, subcmd, opts, *args):
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"""${cmd_name}: create loop image
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Usage:
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${name} ${cmd_name} <ksfile> [OPTS]
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${cmd_option_list}
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"""
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if len(args) != 1:
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raise errors.Usage("Extra arguments given")
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creatoropts = configmgr.create
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ksconf = args[0]
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if creatoropts['runtime'] == "bootstrap":
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configmgr._ksconf = ksconf
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rt_util.bootstrap_mic()
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recording_pkgs = []
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if len(creatoropts['record_pkgs']) > 0:
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recording_pkgs = creatoropts['record_pkgs']
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if creatoropts['release'] is not None:
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if 'name' not in recording_pkgs:
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recording_pkgs.append('name')
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if 'vcs' not in recording_pkgs:
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recording_pkgs.append('vcs')
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configmgr._ksconf = ksconf
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# Called After setting the configmgr._ksconf
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# as the creatoropts['name'] is reset there.
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if creatoropts['release'] is not None:
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creatoropts['outdir'] = "%s/%s/images/%s/" % (creatoropts['outdir'],
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creatoropts['release'],
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creatoropts['name'])
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# try to find the pkgmgr
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pkgmgr = None
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backends = pluginmgr.get_plugins('backend')
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if 'auto' == creatoropts['pkgmgr']:
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for key in configmgr.prefer_backends:
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if key in backends:
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pkgmgr = backends[key]
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break
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else:
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for key in backends.keys():
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if key == creatoropts['pkgmgr']:
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pkgmgr = backends[key]
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break
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if not pkgmgr:
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raise errors.CreatorError("Can't find backend: %s, "
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"available choices: %s" %
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(creatoropts['pkgmgr'],
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','.join(backends.keys())))
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creator = LoopImageCreator(creatoropts,
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pkgmgr,
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opts.compress_image,
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opts.shrink)
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if len(recording_pkgs) > 0:
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creator._recording_pkgs = recording_pkgs
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image_names = [creator.name + ".img"]
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image_names.extend(creator.get_image_names())
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self.check_image_exists(creator.destdir,
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creator.pack_to,
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image_names,
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creatoropts['release'])
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try:
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creator.check_depend_tools()
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creator.mount(None, creatoropts["cachedir"])
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creator.install()
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creator.configure(creatoropts["repomd"])
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creator.copy_kernel()
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creator.unmount()
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creator.package(creatoropts["outdir"])
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if creatoropts['release'] is not None:
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creator.release_output(ksconf,
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creatoropts['outdir'],
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creatoropts['release'])
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creator.print_outimage_info()
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except errors.CreatorError:
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raise
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finally:
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creator.cleanup()
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msger.info("Finished.")
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return 0
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@classmethod
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def _do_chroot_tar(cls, target, cmd=[]):
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mountfp_xml = os.path.splitext(target)[0] + '.xml'
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if not os.path.exists(mountfp_xml):
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raise errors.CreatorError("No mount point file found for this tar "
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"image, please check %s" % mountfp_xml)
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import tarfile
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tar = tarfile.open(target, 'r')
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tmpdir = misc.mkdtemp()
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tar.extractall(path=tmpdir)
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tar.close()
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mntdir = misc.mkdtemp()
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loops = []
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for (mp, label, name, size, fstype) in load_mountpoints(mountfp_xml):
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if fstype in ("ext2", "ext3", "ext4"):
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myDiskMount = fs_related.ExtDiskMount
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elif fstype == "btrfs":
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myDiskMount = fs_related.BtrfsDiskMount
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elif fstype in ("vfat", "msdos"):
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myDiskMount = fs_related.VfatDiskMount
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else:
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msger.error("Cannot support fstype: %s" % fstype)
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name = os.path.join(tmpdir, name)
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size = size * 1024L * 1024L
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loop = myDiskMount(fs_related.SparseLoopbackDisk(name, size),
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os.path.join(mntdir, mp.lstrip('/')),
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fstype, size, label)
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try:
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msger.verbose("Mount %s to %s" % (mp, mntdir + mp))
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fs_related.makedirs(os.path.join(mntdir, mp.lstrip('/')))
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loop.mount()
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except:
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loop.cleanup()
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for lp in reversed(loops):
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chroot.cleanup_after_chroot("img", lp, None, mntdir)
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shutil.rmtree(tmpdir, ignore_errors=True)
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raise
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loops.append(loop)
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try:
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if len(cmd) != 0:
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cmdline = "/usr/bin/env HOME=/root " + ' '.join(cmd)
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else:
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cmdline = "/usr/bin/env HOME=/root /bin/bash"
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chroot.chroot(mntdir, None, cmdline)
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except:
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raise errors.CreatorError("Failed to chroot to %s." % target)
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finally:
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for loop in reversed(loops):
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chroot.cleanup_after_chroot("img", loop, None, mntdir)
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shutil.rmtree(tmpdir, ignore_errors=True)
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@classmethod
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def do_chroot(cls, target, cmd=[]):
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if target.endswith('.tar'):
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import tarfile
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if tarfile.is_tarfile(target):
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LoopPlugin._do_chroot_tar(target, cmd)
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return
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else:
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raise errors.CreatorError("damaged tarball for loop images")
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img = target
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imgsize = misc.get_file_size(img) * 1024L * 1024L
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imgtype = misc.get_image_type(img)
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if imgtype == "btrfsimg":
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fstype = "btrfs"
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myDiskMount = fs_related.BtrfsDiskMount
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elif imgtype in ("ext3fsimg", "ext4fsimg"):
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fstype = imgtype[:4]
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myDiskMount = fs_related.ExtDiskMount
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else:
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raise errors.CreatorError("Unsupported filesystem type: %s" \
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% imgtype)
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extmnt = misc.mkdtemp()
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extloop = myDiskMount(fs_related.SparseLoopbackDisk(img, imgsize),
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extmnt,
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fstype,
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4096,
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"%s label" % fstype)
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try:
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extloop.mount()
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except errors.MountError:
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extloop.cleanup()
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shutil.rmtree(extmnt, ignore_errors=True)
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raise
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try:
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if len(cmd) != 0:
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cmdline = ' '.join(cmd)
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else:
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cmdline = "/bin/bash"
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envcmd = fs_related.find_binary_inchroot("env", extmnt)
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if envcmd:
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cmdline = "%s HOME=/root %s" % (envcmd, cmdline)
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chroot.chroot(extmnt, None, cmdline)
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except:
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raise errors.CreatorError("Failed to chroot to %s." % img)
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finally:
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chroot.cleanup_after_chroot("img", extloop, None, extmnt)
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@classmethod
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def do_unpack(cls, srcimg):
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image = os.path.join(tempfile.mkdtemp(dir="/var/tmp", prefix="tmp"),
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"target.img")
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msger.info("Copying file system ...")
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shutil.copyfile(srcimg, image)
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return image
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