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[Bug runtime/14245] New: Support debugfs mounted 0700
- From: "jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Thu, 14 Jun 2012 21:56:56 +0000
- Subject: [Bug runtime/14245] New: Support debugfs mounted 0700
- Auto-submitted: auto-generated
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.
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