generic-poky/scripts/swabber-strace-attach
Robert Yang d760fb97f5 scripts: replace os.system with subprocess.call
Replace os.system with subprocess.call since the older function would
fail (more or less) silently if the executed program cannot be found

More info:
http://docs.python.org/library/subprocess.html#subprocess-replacements

[YOCTO #2454]

(From OE-Core rev: 57f843146ed62c04c23bc380dc8cb38aba264f1c)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2012-05-30 12:04:45 +01:00

32 lines
645 B
Python
Executable file

#!/usr/bin/env python
import os
import sys
import subprocess
# Detach from the controlling terminal and parent process by forking twice to daemonize ourselves,
# then run the command passed as argv[1]. Send log data to argv[2].
pid = os.fork()
if (pid == 0):
os.setsid()
pid = os.fork()
if (pid != 0):
os._exit(0)
else:
sys.exit()
si = file(os.devnull, 'r')
so = file(sys.argv[2], 'w')
se = so
# Replace those fds with our own
os.dup2(si.fileno(), sys.stdin.fileno())
os.dup2(so.fileno(), sys.stdout.fileno())
os.dup2(se.fileno(), sys.stderr.fileno())
ret = subprocess.call(sys.argv[1], shell=True)
os._exit(ret)