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From: hooanon05@yahoo.co.jp
To: zohar@us.ibm.com
Cc: linux-kernel@vger.kernel.org
Subject: Q. IMA and mark_files_ro()
Date: Thu, 18 Jun 2009 00:22:02 +0900	[thread overview]
Message-ID: <9932.1245252122@jrobl> (raw)


I have a question about IMA.
IMA tracks file-open and open for read/write individually based upon
MAY_READ/WRITE or FMODE_READ/WRITE.
But FMODE_WRITE may be dropped by mark_files_ro() which is called by
emergency_remount().
In this case, 'readcount' and 'writecount' in IMA will be incorrect. And
IMA will produce wrong messages.

It may not be necessary to support such case (because it is
"emergency"), so I don't say it is a big problem. But I'd like to ask
whether it is an intended behaviour or not.

Thanks in advance
J. R. Okajima

                 reply	other threads:[~2009-06-17 15:22 UTC|newest]

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