- 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)
-
-try:
- open('/sys/fs/cgroup/cpuacct/system/libvirtd.service/libvirt/lxc/%s/tasks'%slice_name,'w').write(str(os.getpid()))
-except:
- print "Error assigning cpuacct: %s" % slice_name
- exit(1)
-
-# If the slice is frozen, then we'll get an EBUSY when trying to write to the task
-# list for the freezer cgroup. Since the user couldn't do anything anyway, it's best
-# in this case to error out the shell. (an alternative would be to un-freeze it,
-# add the task, and re-freeze it)
-try:
- f=open('/sys/fs/cgroup/freezer/libvirt/lxc/%s/tasks'%(slice_name),'w')
- f.write(str(os.getpid()))
- # note: we need to call f.close() explicitly, or we'll get an exception in
- # the object destructor, which will not be caught
- f.close()
-except:
- print "Error adding task to freezer cgroup. Slice is probably frozen: %s" % slice_name
- exit(1)
-
-setns.chcontext('/proc/%s/ns/uts'%pid)
-setns.chcontext('/proc/%s/ns/ipc'%pid)
-
-if (not options.netns):
- setns.chcontext('/proc/%s/ns/net'%pid)
-
-if (not options.mntns):
- open('/proc/lxcsu','w').write(pid)
-
-if (not options.pidns):
- open('/proc/pidsu','w').write(pid)
-
-# cgroups is not yet LXC-safe, so we need to use the course grained access control
-# strategy of unmounting the filesystem
-
-umount_result = True
-for subsystem in ['cpuset','cpu,cpuacct','memory','devices','freezer','net_cls','blkio','perf_event']:
- fs_path = '/sys/fs/cgroup/%s'%subsystem
- if (not umount(fs_path)):
+ print "Domain %s not found"%slice_name
+ exit(1)
+
+ pid = '%s'%pidnum
+ if debug: print "Found pidnum",pidnum
+ cmdline = open('/proc/%s/cmdline'%pidnum).read().rstrip('\n\x00')
+ arch = getarch('/proc/%s/exe'%pid)
+
+ if (not pid):
+ print "Domain %s not started"%slice_name
+ exit(1)
+
+ if arch is None:
+ arch = 'x86_64'
+
+ # Set sysctls specific to slice
+ sysctls = []
+ sysctl_dir = '/etc/planetlab/vsys-attributes/%s'%slice_name
+ if (os.access(sysctl_dir,0)):
+ entries = os.listdir(sysctl_dir)
+ for e in entries:
+ prefix = 'vsys_sysctl.'
+ if (e.startswith(prefix)):
+ sysctl_file = '/'.join([sysctl_dir,e])
+ sysctl_name = e[len(prefix):]
+ sysctl_val = open(sysctl_file).read()
+ sysctls.append((sysctl_file, sysctl_name, sysctl_val))
+
+ subdirs = get_cgroup_subdirs_for_pid(pid)
+ sysfs_root = '/sys/fs/cgroup'
+
+ # If the slice is frozen, then we'll get an EBUSY when trying to write to the task
+ # list for the freezer cgroup. Since the user couldn't do anything anyway, it's best
+ # in this case to error out the shell. (an alternative would be to un-freeze it,
+ # add the task, and re-freeze it)
+ # Enter cgroups
+ current_cgroup = ''
+ for subsystem in ['cpuset','memory','blkio','cpuacct','cpuacct,cpu','freezer']:
+ try:
+ current_cgroup = subsystem
+
+ # There seems to be a bug in the cgroup schema: cpuacct,cpu can become cpu,cpuacct
+ # We need to handle both
+ task_path_alt = None
+ try:
+ subsystem_comps = subsystem.split(',')
+ subsystem_comps.reverse()
+ subsystem_alt = ','.join(subsystem_comps)
+ tasks_path_alt = [sysfs_root, subsystem_alt, subdirs[subsystem], 'tasks']
+ except Exception,e:
+ pass
+
+ tasks_path = [sysfs_root,subsystem,subdirs[subsystem],'tasks']
+ tasks_path_str = '/'.join(tasks_path)
+
+ try:
+ f = open(tasks_path_str, 'w')
+ except:
+ tasks_path_alt_str = '/'.join(tasks_path_alt)
+ f = open(tasks_path_alt_str, 'w')
+
+ f.write(str(os.getpid()))
+ if (subsystem=='freezer'):
+ f.close()
+
+ except Exception,e:
+ if (not subdirs.has_key(subsystem)):
+ pass
+ else:
+ if debug: print e
+ print "Error assigning cgroup %s (%s) for slice %s"%(current_cgroup,pid, slice_name)
+ exit(1)
+
+
+ setns.chcontext('/proc/%s/ns/uts'%pid)
+ setns.chcontext('/proc/%s/ns/ipc'%pid)
+
+ if (not args.pidns):
+ setns.chcontext('/proc/%s/ns/pid'%pid)
+
+ if (not args.netns):
+ setns.chcontext('/proc/%s/ns/net'%pid)
+
+ if (not args.mntns):
+ setns.chcontext('/proc/%s/ns/mnt'%pid)
+
+ proc_mounted = False
+ if (not os.access('/proc/self',0)):
+ proc_mounted = True
+ setns.proc_mount()
+
+ for (sysctl_file, sysctl_name, sysctl_val) in sysctls:
+ for fn in ["/sbin/sysctl", "/usr/sbin/sysctl", "/bin/sysctl", "/usr/bin/sysctl"]:
+ if os.path.exists(fn):
+ os.system('%s -w %s=%s >/dev/null 2>&1'%(fn, sysctl_name,sysctl_val))
+ break
+ else:
+ print "Error: image does not have a sysctl binary"
+
+ # cgroups is not yet LXC-safe, so we need to use the coarse grained access control
+ # strategy of unmounting the filesystem
+
+ umount_result = True
+ for subsystem in ['cpuset','cpu,cpuacct','memory','devices','freezer','net_cls','blkio','perf_event','systemd']:
+ fs_path = '/sys/fs/cgroup/%s'%subsystem
+ if (not umount(fs_path,'-l')):
+ pass
+ # Leaving these comments for historical reference
+ #print "Error disabling cgroup access"
+ #exit(1) - Don't need this because failure here implies failure in the call to umount /sys/fs/cgroup
+
+ if (not umount('/sys/fs/cgroup')):