On Jan 2, 3:46 pm, Steve Holden <st...@holdenweb.com> wrote: > 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?
It's errno=13 ... "permission denied". > > 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
