Revert accidentally pushed close_fds experiment

runtest.py

@@ -71,26 +71,6 @@ parser.add_argument('mal_cmd', nargs="*",
 parser.add_argument('--crlf', dest='crlf', action='store_true',
         help="Write \\r\\n instead of \\n to the input")
 
-import errno
-def list_fds():
-    """List process currently open FDs and their target """
-    if sys.platform != 'linux2':
-        raise NotImplementedError('Unsupported platform: %s' % sys.platform)
-
-    ret = {}
-    base = '/proc/self/fd'
-    for num in os.listdir(base):
-        path = None
-        try:
-            path = os.readlink(os.path.join(base, num))
-        except OSError as err:
-            # Last FD is always the "listdir" one (which may be closed)
-            if err.errno != errno.ENOENT:
-                raise
-        ret[int(num)] = path
-
-    return ret
-
 class Runner():
     def __init__(self, args, no_pty=False, line_break="\n"):
         #print "args: %s" % repr(args)
@@ -104,13 +84,11 @@ class Runner():
         env['TERM'] = 'dumb'
         env['INPUTRC'] = '/dev/null'
         env['PERL_RL'] = 'false'
-        print("FDS before: %s" % list_fds())
         if no_pty:
             self.p = Popen(args, bufsize=0,
                            stdin=PIPE, stdout=PIPE, stderr=STDOUT,
                            preexec_fn=os.setsid,
-                           env=env, close_fds=True)
-                           #env=env)
+                           env=env)
             self.stdin = self.p.stdin
             self.stdout = self.p.stdout
         else:
@@ -125,8 +103,7 @@ class Runner():
             self.p = Popen(args, bufsize=0,
                            stdin=slave, stdout=slave, stderr=STDOUT,
                            preexec_fn=os.setsid,
-                           env=env, close_fds=True)
-                           #env=env)
+                           env=env)
             # Now close slave so that we will get an exception from
             # read when the child exits early
             # http://stackoverflow.com/questions/11165521
@@ -134,8 +111,6 @@ class Runner():
             self.stdin = os.fdopen(master, 'r+b', 0)
             self.stdout = self.stdin
 
-        print("FDS after: %s" % list_fds())
-
         #print "started"
         self.buf = ""
         self.last_prompt = ""