From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <systemtap-return-19543-listarch-systemtap=sources.redhat.com@sourceware.org>
Received: (qmail 24561 invoked by alias); 14 Jun 2012 21:57:10 -0000
Received: (qmail 24551 invoked by uid 22791); 14 Jun 2012 21:57:09 -0000
X-SWARE-Spam-Status: No, hits=-2.9 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00,TW_GF
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO sourceware.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 14 Jun 2012 21:56:57 +0000
From: "jistone at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/14245] New: Support debugfs mounted 0700
Date: Thu, 14 Jun 2012 21:57:00 -0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: systemtap
X-Bugzilla-Component: runtime
X-Bugzilla-Keywords:
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: jistone at redhat dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: systemtap at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-14245-6586@http.sourceware.org/bugzilla/>
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <systemtap.sourceware.org>
List-Subscribe: <mailto:systemtap-subscribe@sourceware.org>
List-Post: <mailto:systemtap@sourceware.org>
List-Help: <mailto:systemtap-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: systemtap-owner@sourceware.org
X-SW-Source: 2012-q2/txt/msg00262.txt.bz2

http://sourceware.org/bugzilla/show_bug.cgi?id=14245

             Bug #: 14245
           Summary: Support debugfs mounted 0700
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: runtime
        AssignedTo: systemtap@sourceware.org
        ReportedBy: jistone@redhat.com
    Classification: Unclassified


Related to bug #14244, it would be nice we could support non-root users running
on systems with mode 0700 debugfs.  Apparently Ubuntu has started defaulting
this way.  See again this thread:
http://sourceware.org/ml/systemtap/2012-q2/msg00243.html

There I briefly started brainstorming what would be needed, "We could open the
directory in staprun and do the access check with faccessat().  Then we'd have
to also pass a control_channel fd across the exec to stapio, since it can't
open that path itself."

This will require a good dose of security-conscious caution.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.