-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
-
-for e 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 ("slice",dest="slice_name",nargs=1)
+
+ options = parser.parse_args()
+ slice_name=options.slice_name
+
+ 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:
+ try:
+ l = e.rstrip()
+ path = l.split(':')[0]
+ comp = l.rsplit(':')[-1]
+ slice_name_check = comp.rsplit('/')[-1]
+
+ if (slice_name_check == slice_name):
+ slice_path = path
+ pid = slice_path.split('/')[2]
+ cmdline = open('/proc/%s/cmdline'%pid).read().rstrip('\n\x00')
+ if (cmdline == '/sbin/init'):
+ slice_spec = slice_path
+ arch = getarch('/proc/%s/exe'%pid)
+ break
+ except:
+ break
+
+ if (not slice_spec or not pid):
+ print "Not started: %s"%slice_name
+ exit(1)
+
+ # Enter cgroups
+ try:
+ for subsystem in ['cpuset','memory','blkio']:
+ open('/sys/fs/cgroup/%s/libvirt/lxc/%s/tasks'%(subsystem,slice_name),'w').write(str(os.getpid()))
+
+ except:
+ print "Error assigning resources: %s"%slice_name
+ exit(1)
+