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From: mojo@kepler.UUCP (Morris Jones)
Newsgroups: net.bugs.uucp,net.news.adm
Subject: mkdir() under suid
Message-ID: <495@kepler.UUCP>
Date: Fri, 7-Feb-86 04:59:33 EST
Article-I.D.: kepler.495
Posted: Fri Feb  7 04:59:33 1986
Date-Received: Sun, 9-Feb-86 07:51:03 EST
Organization: MicroPro Int'l Corp., San Rafael, CA
Lines: 28
Xref: watmath net.bugs.uucp:687 net.news.adm:506
Summary: Did you solve it?

This is a known problem that was discussed in the 2.10.3 documentation
when I was installing net news.  I've now encountered the problem
under honey danber uucp.

Problem: Directories created by programs running under a user id
	 different from the real user id (suid bit set) are owned
	 by the real user and not the effective user.

	 When honey danber uucico creates a machine directory, its
	 ownership may be the person sending mail to that machine,
	 and uux, running as user "uucp", will not be able to create
	 command and data files.

For the time being, I've commented out the portion of the cleanup
script that erases empty spooling directories.  If the directories
don't have to be created, I won't encounter the problem.  ("Hey
Doc, it hurts when I do this: #*$%&#*%&!").  For the sake of news,
I built a script that finds directories that aren't owned by the
news user and fixes them.

But the news documentation hints at another solution -- building
your own version of mkdir().  Did you do this?  Will you share it
with me?

-- 
Mojo
... Morris Jones, MicroPro Product Development
{lll-crg,ptsfa,dual,well,pyramid}!micropro!kepler!mojo