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-rw-r--r--node-admin/scripts/pyroute2/netns/__init__.py123
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diff --git a/node-admin/scripts/pyroute2/netns/__init__.py b/node-admin/scripts/pyroute2/netns/__init__.py
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--- a/node-admin/scripts/pyroute2/netns/__init__.py
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@@ -1,123 +0,0 @@
-# By Peter V. Saveliev https://pypi.python.org/pypi/pyroute2. Dual licensed under the Apache 2 and GPLv2+ see https://github.com/svinota/pyroute2 for License details.
-'''
-Network namespaces management
-=============================
-
-Pyroute2 provides basic namespaces management support. The
-`netns` module contains several tools for that.
-
-Please be aware, that in order to run system calls the
-library uses `ctypes` module. It can fail on platforms
-where SELinux is enforced. If the Python interpreter,
-loading this module, dumps the core, one can check the
-SELinux state with `getenforce` command.
-
-'''
-
-import os
-import errno
-import ctypes
-import sys
-
-if sys.maxsize > 2**32:
- __NR_setns = 308
-else:
- __NR_setns = 346
-
-CLONE_NEWNET = 0x40000000
-MNT_DETACH = 0x00000002
-MS_BIND = 4096
-MS_REC = 16384
-MS_SHARED = 1 << 20
-NETNS_RUN_DIR = '/var/run/netns'
-
-
-def listnetns():
- '''
- List available network namespaces.
- '''
- try:
- return os.listdir(NETNS_RUN_DIR)
- except OSError as e:
- if e.errno == errno.ENOENT:
- return []
- else:
- raise
-
-
-def create(netns, libc=None):
- '''
- Create a network namespace.
- '''
- libc = libc or ctypes.CDLL('libc.so.6', use_errno=True)
- # FIXME validate and prepare NETNS_RUN_DIR
-
- netnspath = '%s/%s' % (NETNS_RUN_DIR, netns)
- netnspath = netnspath.encode('ascii')
- netnsdir = NETNS_RUN_DIR.encode('ascii')
-
- # init netnsdir
- try:
- os.mkdir(netnsdir)
- except OSError as e:
- if e.errno != errno.EEXIST:
- raise
-
- # this code is ported from iproute2
- done = False
- while libc.mount(b'', netnsdir, b'none', MS_SHARED | MS_REC, None) != 0:
- if done:
- raise OSError(ctypes.get_errno(), 'share rundir failed', netns)
- if libc.mount(netnsdir, netnsdir, b'none', MS_BIND, None) != 0:
- raise OSError(ctypes.get_errno(), 'mount rundir failed', netns)
- done = True
-
- # create mountpoint
- os.close(os.open(netnspath, os.O_RDONLY | os.O_CREAT | os.O_EXCL, 0))
-
- # unshare
- if libc.unshare(CLONE_NEWNET) < 0:
- raise OSError(ctypes.get_errno(), 'unshare failed', netns)
-
- # bind the namespace
- if libc.mount(b'/proc/self/ns/net', netnspath, b'none', MS_BIND, None) < 0:
- raise OSError(ctypes.get_errno(), 'mount failed', netns)
-
-
-def remove(netns, libc=None):
- '''
- Remove a network namespace.
- '''
- libc = libc or ctypes.CDLL('libc.so.6', use_errno=True)
- netnspath = '%s/%s' % (NETNS_RUN_DIR, netns)
- netnspath = netnspath.encode('ascii')
- libc.umount2(netnspath, MNT_DETACH)
- os.unlink(netnspath)
-
-
-def setns(netns, flags=os.O_CREAT, libc=None):
- '''
- Set netns for the current process.
-
- The flags semantics is the same as for the `open(2)`
- call:
-
- - O_CREAT -- create netns, if doesn't exist
- - O_CREAT | O_EXCL -- create only if doesn't exist
- '''
- libc = libc or ctypes.CDLL('libc.so.6', use_errno=True)
- netnspath = '%s/%s' % (NETNS_RUN_DIR, netns)
- netnspath = netnspath.encode('ascii')
-
- if netns in listnetns():
- if flags & (os.O_CREAT | os.O_EXCL) == (os.O_CREAT | os.O_EXCL):
- raise OSError(errno.EEXIST, 'netns exists', netns)
- else:
- if flags & os.O_CREAT:
- create(netns, libc=libc)
-
- nsfd = os.open(netnspath, os.O_RDONLY)
- ret = libc.syscall(__NR_setns, nsfd, CLONE_NEWNET)
- if ret != 0:
- raise OSError(ctypes.get_errno(), 'failed to open netns', netns)
- return nsfd