[Tutor] Running a python script as root.

[Srihari k]

I have a small script that uses python-gammu to read time from my
phone and set the system time:

#!/usr/bin/python
import gammu
sm=gammu.StateMachine()
sm.ReadConfig()
sm.Init()
cell_time=sm.GetDateTime()
import os
os.system('date -s \'%s\''% cell_time)

Now this script works when i run it as root(#)./settime.py or do a
$sudo ./settime.py
When i run it as normal user $./settime.py (as expected) the following
error occurs:

date: cannot set date: Operation not permitted
Sun Jul  4 23:37:37 IST 2010

This is because the normal user is not allowed to set the time using
date -s command.

I did #chmod +s settime.py so that SUID bit be set and all users can
execute the script and set the system time.
now the permissions of file are:
-rwsr-xr-x 1 root root 165 2010-07-04 23:16 settime.py


The script still works as before ..
date: cannot set date: Operation not permitted
Sun Jul  4 23:37:37 IST 2010

I guess this because the python interpreter is still being run by the
normal user and is unprivileged to set the date ? Is it ?



Now how do i make this script work for everyone?

Thanks in advance,
-- 
Srihari K