Created
March 27, 2016 22:30
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#!/usr/bin/python | |
# GistID: 1a3b938ba1f28ab18e6b | |
# | |
# List all Namespaces (works for Ubuntu 12.04 and higher) | |
# | |
# (C) Ralf Trezeciak 2013-2014 | |
# | |
# | |
# This program is free software: you can redistribute it and/or modify | |
# it under the terms of the GNU General Public License as published by | |
# the Free Software Foundation, either version 3 of the License, or | |
# (at your option) any later version. | |
# | |
# This program is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
# GNU General Public License for more details. | |
# | |
# You should have received a copy of the GNU General Public License | |
# along with this program. If not, see <http://www.gnu.org/licenses/>. | |
# | |
import os | |
import fnmatch | |
if os.geteuid() != 0: | |
print "This script must be run as root\nBye" | |
exit(1) | |
def getinode(pid, type): | |
link = '/proc/' + pid + '/ns/' + type | |
ret = '' | |
try: | |
ret = os.readlink(link) | |
except OSError as e: | |
ret = '' | |
pass | |
return ret | |
def getcmd(p): | |
""" get the running command """ | |
try: | |
cmd = open(os.path.join('/proc', p, 'cmdline'), 'rb').read() | |
if cmd == '': | |
cmd = open(os.path.join('/proc', p, 'comm'), 'rb').read() | |
cmd = cmd.replace('\x00', ' ') | |
cmd = cmd.replace('\n', ' ') | |
return cmd | |
except: | |
return '' | |
def getpcmd(p): | |
""" look for docker parents """ | |
try: | |
f = '/proc/' + p + '/stat' | |
arr = open(f, 'rb').read().split() | |
cmd = getcmd(arr[3]) | |
if cmd.startswith('/usr/bin/docker'): | |
return 'docker' | |
except: | |
pass | |
return '' | |
# | |
# get the namespaces of PID=1 | |
# assumption: these are the namespaces supported by the system | |
# | |
nslist = os.listdir('/proc/1/ns/') | |
if len(nslist) == 0: | |
print 'No Namespaces found for PID=1' | |
exit(1) | |
# print nslist | |
# | |
# get the inodes used for PID=1 | |
# | |
baseinode = [] | |
for x in nslist: | |
baseinode.append(getinode('1', x)) | |
# print "Default namespaces: " , baseinode | |
err = 0 | |
ns = [] | |
ipnlist = [] | |
# | |
# loop over the network namespaces created using "ip" | |
# | |
try: | |
netns = os.listdir('/var/run/netns/') | |
for p in netns: | |
fd = os.open('/var/run/netns/' + p, os.O_RDONLY) | |
info = os.fstat(fd) | |
os.close(fd) | |
ns.append('-- net:[' + str(info.st_ino) + '] created by ip netns add ' + p) | |
ipnlist.append('net:[' + str(info.st_ino) + ']') | |
except: | |
# might fail if no network namespaces are existing | |
pass | |
# | |
# walk through all pids and list diffs | |
# | |
pidlist = fnmatch.filter(os.listdir('/proc/'), '[0123456789]*') | |
# print pidlist | |
for p in pidlist: | |
try: | |
pnslist = os.listdir('/proc/' + p + '/ns/') | |
for x in pnslist: | |
i = getinode(p, x) | |
if i != '' and i not in baseinode: | |
cmd = getcmd(p) | |
pcmd = getpcmd(p) | |
if pcmd != '': | |
cmd = '[' + pcmd + '] ' + cmd | |
tag = '' | |
if i in ipnlist: | |
tag = '**' | |
ns.append(p + ' ' + i + tag + ' ' + cmd) | |
except: | |
# might happen if a pid is destroyed during list processing | |
pass | |
# | |
# print the stuff | |
# | |
print '{0:>10} {1:20} {2}'.format('PID', 'Namespace', 'Thread/Command') | |
for e in ns: | |
x = e.split(' ', 2) | |
print '{0:>10} {1:20} {2}'.format(x[0], x[1], x[2][:60]) | |
# |
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