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Message-ID: <20050125174123.GC11835@openwall.com>
Date: Tue, 25 Jan 2005 20:41:23 +0300
From: Solar Designer <solar@...nwall.com>
To: owl-users@...ts.openwall.com
Subject: Re: rpm warning and openwall temporary file handling

On Tue, Jan 25, 2005 at 11:22:01AM +0700, Ihsan wrote:
> After upgrade to latest Owl-current I found that rpm compilation produce
> many warnings like this: "--march depraceted, use --mtune or --march
> instead". 

Please make sure you update _all_ of Owl to the latest.  You might
have copied the .rpm* files in ~build from an older native tree, --
you need to reset these to be symlinks to under the new native tree
instead ("rm .rpm* && make symlinks").  The problem will go away.

> And I found also problem that I think related to temporary file
> handling on Owl. For example on mysql server (4.1.x) dan clamd antivirus daemon,
> the daemon fail to start with error message like: "Access denied on
> /tmp/.private/root/....."

Yes, this is an instance of a fairly generic problem with the approach
we use for per-user temporary file directories.  If a process switches
to a different user ID, its TMPDIR setting might no longer be correct.

The problem typically shows up when you start a daemon manually
(rather than let it get started on system bootup).

For daemons which are a part of Owl and for those which use Red Hat
style startup scripts (hint!), we've addressed this problem in the
daemon() function (in /etc/init.d/functions) by not exporting TMPDIR
into the daemon being started.

The per-user temporary file directories are thus only for users' (and
root-privileged administrators') sessions to the servers, not for
system daemons.

-- 
Alexander Peslyak <solar at openwall.com>
GPG key ID: B35D3598  fp: 6429 0D7E F130 C13E C929  6447 73C3 A290 B35D 3598
http://www.openwall.com - bringing security into open computing environments

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