cassiope wrote: > I have a daemon on a Linux system that supports a number of Windows > clients. Among the functions is to send e-mails, which is > sufficiently complicated that I fork() a separate process which gets > setuid to a lesser user, and calls a python script which does the > actual formatting and emailing (the daemon is written in C). I want > to save a copy of the email in a particular directory which is > accessible to the Windows clients via samba. > > The strange thing is that even with the right user-id, I cannot seem > to write to the directory, getting an IOError exception. Changing the > directory to world-writable fixes this. I can confirm the uid and gid > for the script by having the script print these values just before > trying to create/write the file. Becoming the same lesser user, I > have no problem writing a file to the same directory. > Have you looked at the IOError's errno attribute to find out exactly why the Python subprocess is unable to write to the directory?
> Is there anything that I can do to diagnose why this script is > failing? For various reasons I don't want to make the directory world- > writable. > I'd concur on that decision. > This is on a Debian "squeeze" system, with python 2.5. > > Thanks for any insights! Take a closer look at the exception, that might stimulate a thought or two. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon is coming! Atlanta, Feb 2010 http://us.pycon.org/ Holden Web LLC http://www.holdenweb.com/ UPCOMING EVENTS: http://holdenweb.eventbrite.com/ -- http://mail.python.org/mailman/listinfo/python-list
