# interpreted as representing official policies, either expressed
# or implied, of GRNET S.A.
+from image_creator import get_os_class
+from image_creator import __version__ as version
from image_creator.disk import Disk
import sys
import os
+import optparse
+from pbs import dd
+
+
+class FatalError(Exception):
+ pass
+
+
+def check_writable_dir(option, opt_str, value, parser):
+ if not os.path.isdir(value):
+ raise OptionValueError("%s is not a valid directory name" % value)
+ setattr(parser.values, option.dest, value)
+
+
+def parse_options(input_args):
+ usage = "Usage: %prog [options] <input_media> <name>"
+ parser = optparse.OptionParser(version=version, usage=usage)
+
+ parser.add_option("-o", "--outdir", type="string", dest="outdir",
+ default=".", action="callback", callback=check_writable_dir,
+ help="Output files to DIR [default: working dir]",
+ metavar="DIR")
+
+ parser.add_option("-f", "--force", dest="force", default=False,
+ action="store_true", help="Overwrite output files if they exist")
+
+ parser.add_option("--no-shrink", dest="shrink", default=True,
+ help="Don't shrink any partition before extracting the image",
+ action="store_false")
+
+ options, args = parser.parse_args(input_args)
+
+ if len(args) != 2:
+ parser.error('input media or name are missing')
+ options.source = args[0]
+ options.name = args[1]
+
+ if not os.path.exists(options.source):
+ parser.error('Input media is not accessible')
+
+ return options
+
def main():
- if len(sys.argv) != 3:
- sys.exit("Usage: %s <source> <output_file>" %
- os.path.basename(sys.argv[0]))
- source = sys.argv[1]
- dest = sys.argv[2]
- disk = Disk(source)
+ options = parse_options(sys.argv[1:])
+
+ if os.geteuid() != 0:
+ raise FatalError("You must run %s as root" \
+ % os.path.basename(sys.argv[0]))
+
+ if not options.force:
+ for ext in ('diskdump', 'meta'):
+ filename = "%s/%s.%s" % (options.outdir, options.name, ext)
+ if os.path.exists(filename):
+ raise FatalError("Output file %s exists "
+ "(use --force to overwrite it)." % filename)
+
+ disk = Disk(options.source)
try:
dev = disk.get_device()
+ dev.mount()
+ osclass = get_os_class(dev.distro, dev.ostype)
+ image_os = osclass(dev.root, dev.g)
+ metadata = image_os.get_metadata()
+ image_os.data_cleanup()
+ dev.umount()
+ size = options.shrink and dev.shrink() or dev.size()
+ metadata['size'] = str(size // 2 ** 20)
+ dd('if=%s' % dev.device,
+ 'of=%s/%s.%s' % (options.outdir, options.name, 'diskdump'),
+ 'bs=4M', 'count=%d' % ((size + 1) // 2 ** 22))
+
+ f = open('%s/%s.%s' % (options.outdir, options.name, 'meta'), 'w')
+ for key in metadata.keys():
+ f.write("%s=%s\n" % (key, metadata[key]))
+ f.close()
finally:
disk.cleanup()
+ return 0
+
+COLOR_BLACK = "\033[00m"
+COLOR_RED = "\033[1;31m"
+
if __name__ == '__main__':
- main()
+ try:
+ ret = main()
+ sys.exit(ret)
+ except FatalError as e:
+ print >> sys.stderr, "\n%sError: %s%s\n" % (COLOR_RED, e, COLOR_BLACK)
+ sys.exit(1)
# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
-