root / image_creator / main.py @ c408053f
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# Copyright 2011 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from image_creator import get_os_class |
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from image_creator import __version__ as version |
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from image_creator.disk import Disk |
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import sys |
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import os |
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import optparse |
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from pbs import dd |
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class FatalError(Exception): |
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pass
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def check_writable_dir(option, opt_str, value, parser): |
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if not os.path.isdir(value): |
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raise OptionValueError("%s is not a valid directory name" % value) |
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setattr(parser.values, option.dest, value)
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def parse_options(input_args): |
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usage = "Usage: %prog [options] <input_media> <name>"
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parser = optparse.OptionParser(version=version, usage=usage) |
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parser.add_option("-o", "--outdir", type="string", dest="outdir", |
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default=".", action="callback", callback=check_writable_dir, |
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help="Output files to DIR [default: working dir]",
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metavar="DIR")
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parser.add_option("-f", "--force", dest="force", default=False, |
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action="store_true", help="Overwrite output files if they exist") |
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parser.add_option("--no-shrink", dest="shrink", default=True, |
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help="Don't shrink any partition before extracting the image",
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action="store_false")
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options, args = parser.parse_args(input_args) |
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if len(args) != 2: |
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parser.error('input media or name are missing')
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options.source = args[0]
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options.name = args[1]
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if not os.path.exists(options.source): |
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parser.error('Input media is not accessible')
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return options
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def main(): |
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options = parse_options(sys.argv[1:])
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if os.geteuid() != 0: |
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raise FatalError("You must run %s as root" \ |
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% os.path.basename(sys.argv[0]))
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if not options.force: |
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for ext in ('diskdump', 'meta'): |
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filename = "%s/%s.%s" % (options.outdir, options.name, ext)
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if os.path.exists(filename):
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raise FatalError("Output file %s exists " |
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"(use --force to overwrite it)." % filename)
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disk = Disk(options.source) |
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try:
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dev = disk.get_device() |
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dev.mount() |
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osclass = get_os_class(dev.distro, dev.ostype) |
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image_os = osclass(dev.root, dev.g) |
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metadata = image_os.get_metadata() |
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image_os.data_cleanup() |
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dev.umount() |
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size = options.shrink and dev.shrink() or dev.size() |
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metadata['size'] = str(size // 2 ** 20) |
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dd('if=%s' % dev.device,
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'of=%s/%s.%s' % (options.outdir, options.name, 'diskdump'), |
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'bs=4M', 'count=%d' % ((size + 1) // 2 ** 22)) |
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f = open('%s/%s.%s' % (options.outdir, options.name, 'meta'), 'w') |
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for key in metadata.keys(): |
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f.write("%s=%s\n" % (key, metadata[key]))
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f.close() |
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finally:
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disk.cleanup() |
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return 0 |
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COLOR_BLACK = "\033[00m"
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COLOR_RED = "\033[1;31m"
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if __name__ == '__main__': |
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try:
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ret = main() |
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sys.exit(ret) |
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except FatalError as e: |
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print >> sys.stderr, "\n%sError: %s%s\n" % (COLOR_RED, e, COLOR_BLACK) |
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sys.exit(1)
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# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
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