# can set to True here, but also use the -d option
debug = False
-#################### should go into a separate libvirtsystemd.py
-# but we want to keep packaging simple for now
-
-# reproducing libvirt's systemd-oriented escaping mechanism
-# http://code.metager.de/source/xref/lib/virt/src/util/virsystemd.c
-# (see original code at the end of this file)
-
-def virSystemdEscapeName (name):
- result=''
- def ESCAPE(c,s):
- # replace hex's output '0x..' into '\x..'
- return s+hex(ord(c)).replace('0','\\',1)
- VALID_CHARS = \
- "0123456789" + \
- "abcdefghijklmnopqrstuvwxyz" + \
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + \
- ":-_.\\"
- for c in name:
- if c=='/':
- result += '-'
- elif c in '-\\' or c not in VALID_CHARS:
- result=ESCAPE(c,result)
- else:
- result += c
- return result
-
-#35static void virSystemdEscapeName(virBufferPtr buf,
-#36 const char *name)
-#37{
-#38 static const char hextable[16] = "0123456789abcdef";
-#39
-#40#define ESCAPE(c) \
-#41 do { \
-#42 virBufferAddChar(buf, '\\'); \
-#43 virBufferAddChar(buf, 'x'); \
-#44 virBufferAddChar(buf, hextable[(c >> 4) & 15]); \
-#45 virBufferAddChar(buf, hextable[c & 15]); \
-#46 } while (0)
-#47
-#48#define VALID_CHARS \
-#49 "0123456789" \
-#50 "abcdefghijklmnopqrstuvwxyz" \
-#51 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
-#52 ":-_.\\"
-#53
-#54 if (*name == '.') {
-#55 ESCAPE(*name);
-#56 name++;
-#57 }
-#58
-#59 while (*name) {
-#60 if (*name == '/')
-#61 virBufferAddChar(buf, '-');
-#62 else if (*name == '-' ||
-#63 *name == '\\' ||
-#64 !strchr(VALID_CHARS, *name))
-#65 ESCAPE(*name);
-#66 else
-#67 virBufferAddChar(buf, *name);
-#68 name++;
-#69 }
-#70
-#71#undef ESCAPE
-#72#undef VALID_CHARS
-#73}
-
-def virSystemdMakeScopeName (name, drivername, partition):
- result=''
- result += virSystemdEscapeName (partition)
- result += '-'
- result += virSystemdEscapeName (drivername)
- result += '\\x2d'
- result += virSystemdEscapeName (name)
- result += '.scope'
- return result
-
-#76char *virSystemdMakeScopeName(const char *name,
-#77 const char *drivername,
-#78 const char *partition)
-#79{
-#80 virBuffer buf = VIR_BUFFER_INITIALIZER;
-#81
-#82 if (*partition == '/')
-#83 partition++;
-#84
-#85 virSystemdEscapeName(&buf, partition);
-#86 virBufferAddChar(&buf, '-');
-#87 virSystemdEscapeName(&buf, drivername);
-#88 virBufferAddLit(&buf, "\\x2d");
-#89 virSystemdEscapeName(&buf, name);
-#90 virBufferAddLit(&buf, ".scope");
-#91
-#92 if (virBufferError(&buf)) {
-#93 virReportOOMError();
-#94 return NULL;
-#95 }
-#96
-#97 return virBufferContentAndReset(&buf);
-#98}
-
-### our own additions
-import os.path
-def find_first_dir (candidates):
- for candidate in candidates:
- if os.path.isdir(candidate): return candidate
- raise Exception,"Cannot find valid dir among %s"%'\n'.join(candidates)
-
-def find_sysfs_scope (subsystem, slice_name):
- subsystem1=subsystem
- subsystem2=subsystem
- if subsystem=='cpuacct':
- subsystem2='cpu,cpuacct'
- candidates = [
- # for f16 and our locally brewed libvirt 1.0.4
- "/sys/fs/cgroup/%s/libvirt/lxc/%s"%(subsystem1, slice_name),
- # f20 and libvirt 1.1.3
- "/sys/fs/cgroup/%s/machine.slice/%s"%(subsystem2,
- virSystemdMakeScopeName(slice_name,'lxc','machine')),
- ]
- return find_first_dir (candidates)
-
-#################### end of libvirtsystemd.py
-
def getarch(f):
output = os.popen('readelf -h %s 2>&1'%f).readlines()
classlines = [x for x in output if ('Class' in x.split(':')[0])]
cmd = '/usr/bin/virsh --connect lxc:/// domid %s'%slice_name
pidnum = int(os.popen(cmd).read().rstrip())
except:
- print "Error finding slice %s"%slice_name
+ print "Domain %s not found"%slice_name
exit(1)
pid = '%s'%pidnum
arch = getarch('/proc/%s/exe'%pid)
if (not pid):
- print "Not started: %s"%slice_name
+ print "Domain %s not started"%slice_name
exit(1)
if arch is None:
exit(1)
- setns.chcontext('/proc/%s/ns/uts'%pid)
- setns.chcontext('/proc/%s/ns/ipc'%pid)
+ def chcontext (path):
+ retcod = setns.chcontext (path)
+ if retcod != 0:
+ print 'WARNING - setns(%s)=>%s (ignored)'%(path,retcod)
+ return retcod
+
+ chcontext('/proc/%s/ns/uts'%pid)
+ chcontext('/proc/%s/ns/ipc'%pid)
if (not args.pidns):
- setns.chcontext('/proc/%s/ns/pid'%pid)
+ chcontext('/proc/%s/ns/pid'%pid)
if (not args.netns):
- setns.chcontext('/proc/%s/ns/net'%pid)
+ chcontext('/proc/%s/ns/net'%pid)
if (not args.mntns):
- setns.chcontext('/proc/%s/ns/mnt'%pid)
+ chcontext('/proc/%s/ns/mnt'%pid)
proc_mounted = False
if (not os.access('/proc/self',0)):
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')):
+ print 'WARNING - umount failed (ignored) with path=',fs_path
pass
# Leaving these comments for historical reference
#print "Error disabling cgroup access"