linux-kernel - IMA and ETXTBSY

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Date:	Thu, 18 Jun 2009 14:32:58 +0900
From:	hooanon05@...oo.co.jp
To:	zohar@...ibm.com
cc:	linux-kernel@...r.kernel.org
Subject: IMA and ETXTBSY


After the failure of open(2) with ETXTBSY, IMA produces wrong messages.
Here is a simple test script.

dir=/tmp
cp /bin/sleep $dir
ls -l $dir/sleep
stat -f $dir
$dir/sleep 3 & sleep 1
echo | /bin/dd of=$dir/sleep conv=notrunc && false
wait
rm $dir/sleep


The result.
+ cp /bin/sleep /tmp
+ ls -l /tmp/sleep
-rwxr-xr-x 1 jro jro 23504 Jun 18 14:26 /tmp/sleep
+ stat -f /tmp
  File: "/tmp"
    ID: 4e22c34ea8177d80 Namelen: 255     Type: ext2/ext3
Block size: 1024       Fundamental block size: 1024
Blocks: Total: 918322     Free: 918281     Available: 869285
Inodes: Total: 490560     Free: 490545
+ /tmp/sleep 3
+ sleep 1
+ echo
+ /bin/dd of=/tmp/sleep conv=notrunc
/bin/dd: opening `/tmp/sleep': Text file busy
+ wait
+ rm /tmp/sleep
$ iint_free: writecount: 1
iint_free: opencount: 1


J. R. Okajima
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