| From: | KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com> |
|---|---|
| To: | Aidan Van Dyk <aidan(at)highrise(dot)ca> |
| Cc: | Gregory Stark <stark(at)enterprisedb(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-hackers(at)postgresql(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp> |
| Subject: | Re: Updates of SE-PostgreSQL 8.4devel patches (r1268) |
| Date: | 2008-12-12 00:32:12 |
| Message-ID: | 4941B10C.8020801@ak.jp.nec.com |
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| Lists: | pgsql-hackers |
Aidan Van Dyk wrote:
> Simlarly, SElinux is going to be used *on top* of any application that's
> out there, to try and enfoce the "no data coming in from a secure input"
> leaves through a "less secure output", irrespective of what app level
> security (and in this case, app-level being the SQL/SCHEMA/row-level)
> does itself...
It is incorrect.
SELinux works as a security server which provides access control decisions
for other subsystems. In this model, the kernel is also considered as one
of the subsystems.
Currently, X-window system has SELinux support because it manages window
objects in userspace, and we can use them as a method to communicate
other processes. (Please imagine copy&paste buffer.)
This slide will help your understand:
http://selinux-symposium.org/2007/slides/03-xorg.pdf
Thanks,
--
OSS Platform Development Division, NEC
KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com>
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