lldb/test/API/driver/job_control/shell.py

   1 """
   2 Launch a process (given through argv) similar to how a shell would do it.
   3 """
   4
   5 import signal
   6 import subprocess
   7 import sys
   8 import os
   9
  10
  11 def preexec_fn():
  12     # Block SIGTTOU generated by the tcsetpgrp call
  13     orig_mask = signal.pthread_sigmask(signal.SIG_BLOCK, [signal.SIGTTOU])
  14
  15     # Put us in a new process group.
  16     os.setpgid(0, 0)
  17
  18     # And put it in the foreground.
  19     fd = os.open("/dev/tty", os.O_RDONLY)
  20     os.tcsetpgrp(fd, os.getpgid(0))
  21     os.close(fd)
  22
  23     signal.pthread_sigmask(signal.SIG_SETMASK, orig_mask)
  24
  25
  26 if __name__ == "__main__":
  27     child = subprocess.Popen(sys.argv[1:], preexec_fn=preexec_fn)
  28     print("PID=%d" % child.pid)
  29
  30     _, status = os.waitpid(child.pid, os.WUNTRACED)
  31     print("STATUS=%d" % status)
  32
  33     returncode = child.wait()
  34     print("RETURNCODE=%d" % returncode)