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set sticky bit on connection files #201

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merged 3 commits into from
Feb 7, 2017
Merged

set sticky bit on connection files #201

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97a0f83
set sticky bit on connection files
minrk Sep 13, 2016
aca211c
set sticky bit on connection dir
minrk Feb 7, 2017
63e5d4c
Don't set sticky bit on empty parent dir
minrk Feb 7, 2017
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22 changes: 22 additions & 0 deletions jupyter_client/connect.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
import json
import os
import socket
import stat
import tempfile
import warnings
from getpass import getpass
Expand Down Expand Up @@ -135,6 +136,27 @@ def write_connection_file(fname=None, shell_port=0, iopub_port=0, stdin_port=0,
with open(fname, 'w') as f:
f.write(json.dumps(cfg, indent=2))

if hasattr(stat, 'S_ISVTX'):
# set the sticky bit on the file and its parent directory
# to avoid periodic cleanup
paths = [fname]
runtime_dir = os.path.dirname(fname)
if runtime_dir:
paths.append(runtime_dir)
for path in paths:
permissions = os.stat(path).st_mode
new_permissions = permissions | stat.S_ISVTX
if new_permissions != permissions:
try:
os.chmod(path, permissions)
except OSError as e:
# failed to set sticky bit,
# probably not a big deal
warnings.warn(
"Failed to set sticky bit on %r: %s" % (path, e),
RuntimeWarning,
)

return fname, cfg


Expand Down