From: Dave Hansen <haveblue@us.ibm.com>
To: Kylene Jo Hall <kjhall@us.ibm.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
LSM ML <linux-security-module@vger.kernel.org>,
Dave Safford <safford@us.ibm.com>, Mimi Zohar <zohar@us.ibm.com>,
Serge Hallyn <sergeh@us.ibm.com>
Subject: Re: [RFC][PATCH 1/6] mprotect patch for use by SLIM
Date: Fri, 14 Jul 2006 10:42:28 -0700 [thread overview]
Message-ID: <1152898948.314.7.camel@localhost.localdomain> (raw)
In-Reply-To: <1152897868.23584.4.camel@localhost.localdomain>
On Fri, 2006-07-14 at 10:24 -0700, Kylene Jo Hall wrote:
> This small patch makes mprotect available for use by SLIM for
> write revocation.
Hmmm. Do you really want mprotect() itself? Or, do you just want to
keep people from writing? (there is a difference :)
If somebody mmap()s something with write permissions, I would expect
them to expect to see rw in /proc/<pid>/maps. If you use mprotect() on
that mmap() to remove the write permissions, the permissions will be
reflected in /proc/<pid>/maps.
-- Dave
next prev parent reply other threads:[~2006-07-14 17:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-14 17:24 [RFC][PATCH 1/6] mprotect patch for use by SLIM Kylene Jo Hall
2006-07-14 17:42 ` Dave Hansen [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-07-24 17:51 Kylene Jo Hall
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