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Merge pull request #3078 from ThomasWaldmann/fix-subprocess-env

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fix LDLP restoration for subprocesses, fixes #3077
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TW 2017-10-01 20:48:54 +02:00 committed by GitHub
commit 35c042b97b
1 changed files with 16 additions and 2 deletions
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18
src/borg/helpers/process.py
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@ -1,6 +1,7 @@
import contextlib
import os
import os.path
import re
import shlex
import signal
import subprocess
@ -130,14 +131,27 @@ def prepare_subprocess_env(system, env=None):
"""
env = dict(env if env is not None else os.environ)
if system:
# a pyinstaller binary's bootloader modifies LD_LIBRARY_PATH=/tmp/_ME...,
# a pyinstaller binary's bootloader modifies LD_LIBRARY_PATH=/tmp/_MEIXXXXXX,
# but we do not want that system binaries (like ssh or other) pick up
# (non-matching) libraries from there.
# thus we install the original LDLP, before pyinstaller has modified it:
lp_key = 'LD_LIBRARY_PATH'
lp_orig = env.get(lp_key + '_ORIG') # pyinstaller >= 20160820 has this
lp_orig = env.get(lp_key + '_ORIG') # pyinstaller >= 20160820 / v3.2.1 has this
if lp_orig is not None:
env[lp_key] = lp_orig
else:
# We get here in 2 cases:
# 1. when not running a pyinstaller-made binary.
# in this case, we must not kill LDLP.
# 2. when running a pyinstaller-made binary and there was no LDLP
# in the original env (in this case, the pyinstaller bootloader
# does *not* put ..._ORIG into the env either).
# in this case, we must kill LDLP.
# The directory used by pyinstaller is created by mkdtemp("_MEIXXXXXX"),
# we can use that to differentiate between the cases.
lp = env.get(lp_key)
if lp is not None and re.search(r'/_MEI......', lp):
env.pop(lp_key)
# security: do not give secrets to subprocess
env.pop('BORG_PASSPHRASE', None)
# for information, give borg version to the subprocess