lxcsu

   1 #!/usr/bin/python
   2
   3
   4 import setns
   5 import os
   6
   7 from optparse import OptionParser
   8
   9 parser = OptionParser()
  10 parser.add_option("-n", "--net",
  11                   action="store_true", dest="netns", default=False,
  12                   help="Enter network namespace")
  13 parser.add_option("-m", "--mnt",
  14                   action="store_true", dest="mntns", default=False,
  15                   help="Enter mount namespace")
  16
  17 (options, args) = parser.parse_args()
  18
  19 try:
  20         slice_name = args[0]
  21 except IndexError:
  22         print "You must specify a vm name"
  23         exit(1)
  24
  25
  26 try:
  27         cmd = 'grep %s /proc/*/cgroup | grep freezer'%slice_name
  28         output = os.popen(cmd).readlines()
  29 except:
  30         print "Error finding slice %s"%slice_name
  31         exit(1)
  32
  33 slice_spec = None
  34 for e in output:
  35         try:
  36                 l = e.rstrip()
  37                 path = l.split(':')[0]
  38                 comp = l.rsplit(':')[-1]
  39                 slice_name_check = comp.rsplit('/')[-1]
  40
  41                 if (slice_name_check == slice_name):
  42                         slice_path = path
  43                         pid = slice_path.split('/')[2]
  44                         cmdline = open('/proc/%s/cmdline'%pid).read().rstrip('\n\x00')
  45                         if (cmdline == '/sbin/init'):
  46                                 slice_spec = slice_path
  47                                 break
  48         except:
  49                 break
  50
  51 if (not slice_spec):
  52         print "Could not find any processes associated with %s"%slice_name
  53
  54
  55 #os.closerange(0,1024)
  56
  57 r1 = setns.chcontext('/proc/%s/ns/utc'%pid)
  58 r2 = setns.chcontext('/proc/%s/ns/ipc'%pid)
  59 path = '/proc/%s/ns/net'%pid
  60 r3 = setns.chcontext(path)
  61 os.system('whoami')
  62 open('/proc/lxcsu','w').write(pid)
  63 os.system('mount none -t proc /proc')
  64 os.execv('/bin/sh',['/bin/sh'])