# Helper script for test_tempfile.py.  argv[2] is the number of a file

# descriptor which should _not_ be open.  Check this by attempting to

# write to it -- if we succeed, something is wrong.

import sys

import os

verbose = (sys.argv[1] == 'v')

try:

    fd = int(sys.argv[2])

    try:

        os.write(fd, "blat")

    except os.error:

        # Success -- could not write to fd.

        sys.exit(0)

    else:

        if verbose:

            sys.stderr.write("fd %d is open in child" % fd)

        sys.exit(1)

except StandardError:

    if verbose:

        raise

    sys.exit(1)