Load the glibc library only once for Pyroute2
Load the glibc library only once, needed in the Pyroute2 methods to
create and delete a network namespace.
Conflicts:
neutron/privileged/agent/linux/ip_lib.py
Change-Id: I95b7b7008f4788a98ef871c4b7aecea839ff2310
Closes-Bug: #1854462
(cherry picked from commit af8a812240
)
This commit is contained in:
parent
7e90c5fb73
commit
b2af922987
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@ -10,6 +10,8 @@
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# License for the specific language governing permissions and limitations
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# under the License.
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import ctypes
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from ctypes import util as ctypes_util
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import errno
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import socket
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@ -27,6 +29,15 @@ from neutron import privileged
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_IP_VERSION_FAMILY_MAP = {4: socket.AF_INET, 6: socket.AF_INET6}
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_CDLL = None
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def _get_cdll():
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global _CDLL
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if not _CDLL:
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_CDLL = ctypes.CDLL(ctypes_util.find_library('c'), use_errno=True)
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return _CDLL
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def _get_scope_name(scope):
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"""Return the name of the scope (given as a number), or the scope number
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@ -417,7 +428,7 @@ def create_netns(name, **kwargs):
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:param name: The name of the namespace to create
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"""
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try:
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netns.create(name, **kwargs)
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netns.create(name, libc=_get_cdll())
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except OSError as e:
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if e.errno != errno.EEXIST:
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raise
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@ -430,7 +441,7 @@ def remove_netns(name, **kwargs):
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:param name: The name of the namespace to remove
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"""
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try:
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netns.remove(name, **kwargs)
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netns.remove(name, libc=_get_cdll())
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except OSError as e:
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if e.errno != errno.ENOENT:
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raise
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