Daemon doesn't seem to start

[Bill Rees]

Following the code example in PEP3143 I wrote the code below.  Without the
daemon context I see a steady stream of writes to the output file,
/tmp/xxxx but with the daemon context there is nothing.  As far as I can
tell I'm preserving the file object and expect to see the same stream of
writes that I saw without the context.

The PEP code looks so simple and I think I've followed the pattern here
but there must be something wrong with what I've written but I can't see
it.  Is there something more to the PEP code?

try:
        mf = open("/tmp/xxxx", 'w+')
except (IOError, OSError) as e:
        print(" ".join(["Unable to open /tmp/xxxx:",\
            e.errno, e.strerror]))
        exit(0)

with daemon.DaemonContext(
        working_directory='/',
        umask=0o002,
        pidfile = lockfile.FileLock("/var/run/boo.pid"),
        signal_map = {
        signal.SIGHUP:   hup,
        signal.SIGQUIT:  quit,
        signal.SIGINT:   interrupt,
        },
        files_preserve = [mf]
):
        mf.write("Intro\n")
        while True:
                mf.write("1===================\n")
                time.sleep(10)
                mf.write("2===================\n")
                mf.flush()


-- 
*Bill Rees* *| *
Stack Labs | 10054 Pasadena Ave, Cupertino, CA 95014
brees @stacklighting.com <brees at stacklighting.com>


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