dnc/Utils/Process.py

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2018-11-16 03:31:23 +08:00
# Copyright 2017 Robert Csordas. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# ==============================================================================
import sys
import ctypes
import subprocess
import os
def run(cmd, hide_stderr = True):
libc_search_dirs = ["/lib", "/lib/x86_64-linux-gnu", "/lib/powerpc64le-linux-gnu"]
if sys.platform=="linux" :
found = None
for d in libc_search_dirs:
file = os.path.join(d, "libc.so.6")
if os.path.isfile(file):
found = file
break
if not found:
print("WARNING: Cannot find libc.so.6. Cannot kill process when parent dies.")
killer = None
else:
libc = ctypes.CDLL(found)
PR_SET_PDEATHSIG = 1
KILL = 9
killer = lambda: libc.prctl(PR_SET_PDEATHSIG, KILL)
else:
print("WARNING: OS not linux. Cannot kill process when parent dies.")
killer = None
if hide_stderr:
stderr = open(os.devnull,'w')
else:
stderr = None
return subprocess.Popen(cmd.split(" "), stderr=stderr, preexec_fn=killer)