- return ('device is busy' not in fs_dir)
-
-parser = OptionParser()
-parser.add_option("-n", "--nonet",
- action="store_true", dest="netns", default=False,
- help="Don't enter network namespace")
-parser.add_option("-m", "--nomnt",
- action="store_true", dest="mntns", default=False,
- help="Don't enter mount namespace")
-parser.add_option("-p", "--nopid",
- action="store_true", dest="pidns", default=False,
- help="Don't enter pid namespace")
-parser.add_option("-r", "--root",
- action="store_true", dest="root", default=False,
- help="Enter as root: be careful")
-
-(options, args) = parser.parse_args()
-
-try:
- slice_name = args[0]
-except IndexError:
- print "You must specify a vm name"
- exit(1)
-
-try:
- cmd = 'grep %s /proc/*/cgroup | grep freezer'%slice_name
- output = os.popen(cmd).readlines()
-except:
- print "Error finding slice %s"%slice_name
- exit(1)
-
-slice_spec = None
-
-# xxx fixme xxx - provide a default as this is not always properly computed
-arch = 'x86_64'
-
-for e in output:
+ return ('device is busy' not in output)
+
+def main ():
+ parser = ArgumentParser()
+ parser.add_argument("-n", "--nonet",
+ action="store_true", dest="netns", default=False,
+ help="Don't enter network namespace")
+ parser.add_argument("-m", "--nomnt",
+ action="store_true", dest="mntns", default=False,
+ help="Don't enter mount namespace")
+ parser.add_argument("-p", "--nopid",
+ action="store_true", dest="pidns", default=False,
+ help="Don't enter pid namespace")
+ parser.add_argument("-r", "--root",
+ action="store_true", dest="root", default=False,
+ help="Enter as root: be careful")
+ parser.add_argument("-i","--internal",
+ action="store_true", dest="internal", default=False,
+ help="does *not* prepend '-- -c' to arguments - or invoke lxcsu-internal")
+ parser.add_argument("-d","--debug",
+ action='store_true', dest='debug', default=False,
+ help="debug option")
+ parser.add_argument ("slice_name")
+ parser.add_argument ("command_to_run",nargs="*")
+
+ args = parser.parse_args()
+ slice_name=args.slice_name
+
+ # unless we run the symlink 'lxcsu-internal', or we specify the -i option, prepend '--' '-c'
+ if sys.argv[0].find('internal')>=0: args.internal=True
+
+ # plain lxcsu
+ if not args.internal:
+ # no command given: enter interactive shell
+ if not args.command_to_run: args.command_to_run=['/bin/sh']
+ args.command_to_run = [ '-c' ] + args.command_to_run
+
+ # support for either setting debug at the top of this file, or on the command-line
+ if args.debug:
+ global debug
+ debug=True
+