1 # Copyright 2011 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
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32 # or implied, of GRNET S.A.
34 from image_creator import get_os_class
35 from image_creator import __version__ as version
36 from image_creator.disk import Disk
43 class FatalError(Exception):
47 def check_writable_dir(option, opt_str, value, parser):
48 if not os.path.isdir(value):
49 raise OptionValueError("%s is not a valid directory name" % value)
50 setattr(parser.values, option.dest, value)
53 def parse_options(input_args):
54 usage = "Usage: %prog [options] <input_media> <name>"
55 parser = optparse.OptionParser(version=version, usage=usage)
57 parser.add_option("-o", "--outdir", type="string", dest="outdir",
58 default=".", action="callback", callback=check_writable_dir,
59 help="Output files to DIR [default: working dir]",
62 parser.add_option("-f", "--force", dest="force", default=False,
63 action="store_true", help="Overwrite output files if they exist")
65 parser.add_option("--no-shrink", dest="shrink", default=True,
66 help="Don't shrink any partition before extracting the image",
69 options, args = parser.parse_args(input_args)
72 parser.error('input media or name are missing')
73 options.source = args[0]
74 options.name = args[1]
76 if not os.path.exists(options.source):
77 parser.error('Input media is not accessible')
84 options = parse_options(sys.argv[1:])
87 raise FatalError("You must run %s as root" \
88 % os.path.basename(sys.argv[0]))
91 for ext in ('diskdump', 'meta'):
92 filename = "%s/%s.%s" % (options.outdir, options.name, ext)
93 if os.path.exists(filename):
94 raise FatalError("Output file %s exists "
95 "(use --force to overwrite it)." % filename)
97 disk = Disk(options.source)
99 dev = disk.get_device()
101 osclass = get_os_class(dev.distro, dev.ostype)
102 image_os = osclass(dev.root, dev.g)
103 metadata = image_os.get_metadata()
104 image_os.data_cleanup()
106 size = options.shrink and dev.shrink() or dev.size()
107 metadata['size'] = str(size // 2 ** 20)
109 dd('if=%s' % dev.device,
110 'of=%s/%s.%s' % (options.outdir, options.name, 'diskdump'),
111 'bs=4M', 'count=%d' % ((size + 1) // 2 ** 22))
113 f = open('%s/%s.%s' % (options.outdir, options.name, 'meta'), 'w')
114 for key in metadata.keys():
115 f.write("%s=%s\n" % (key, metadata[key]))
122 COLOR_BLACK = "\033[00m"
123 COLOR_RED = "\033[1;31m"
125 if __name__ == '__main__':
129 except FatalError as e:
130 print >> sys.stderr, "\n%sError: %s%s\n" % (COLOR_RED, e, COLOR_BLACK)
133 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :