usr bin env python coding utf-8 import os import os path import sys im

#!/usr/bin/env python                           
# -*- coding: utf-8 -*-                         

import os
import os.path
import sys    

import atexit
import signal

import errno
import subprocess as sp

UMASK = 0
WORKDIR = '/'
#UID = 101   

NAME = 'talisman'
#if os.getuid() != 0:
#    PIDFILE='/var/run/%s.pid' % (NAME,)
#else:                                  
PIDFILE = os.path.expanduser('~/.%s.pid' % (NAME, ))

def daemonize(stdin='/dev/null',
            stdout='/dev/null', 
            stderr='/dev/null'):
    try:                        
        pid = os.fork()         
    except OSError, err:        
        raise Exception, "%s [%d]" % (err.strerror, err.errno)

    if pid == 0:
        os.setsid()
                   
        try:       
            pid = os.fork()
        except OSError, err:
            raise Exception, "%s [%d]" % (err.strerror, err.errno)

        if pid == 0:
            os.chdir(WORKDIR)
        else:                
            os._exit(0)      

    else:
        os._exit(0)

    si = open(stdin, 'r')
    so = open(stdout, 'a+')
    se = open(stderr, 'a+', 0)

    os.dup2(si.fileno(), sys.stdin.fileno())
    os.dup2(so.fileno(), sys.stdout.fileno())
    os.dup2(se.fileno(), sys.stderr.fileno())
                                             
    return 0                                 

def readpid():
    pidf = open(PIDFILE, 'r')
    pid = pidf.read()        
    pidf.close()             
    return int(pid)          

def writepid():
    pidf = open(PIDFILE, 'w')
    pidf.write("%d" % os.getpid())
    pidf.close

def cleanup():
    os.unlink(PIDFILE)

def reg_signals():
    signal.signal(signal.SIGINT, lambda *args: quit())
    signal.signal(signal.SIGQUIT, lambda *args: quit())

def check_pid():
    """Checks if invalid pidfile exists
    or process is currently running"""
    if os.path.exists(PIDFILE):
        pid = readpid()
        try:
            os.kill(pid, 0)
        except OSError, err:
            if err.errno == errno.ESRCH:
                print "Stale pidfile exists. Removing..."
                os.unlink(PIDFILE)
        else:
            sys.exit("Valid pidfile exists. Exiting...")

def run():


def main():
    check_pid()

    return 0

if __name__ == '__main__':
    sys.exit( main() )