From: russell@coker.com.au (Russell Coker)
To: linux-kernel@vger.kernel.org
Cc: alan@lxorguk.ukuu.org.uk
Subject: patch for open file handles with initrd in 2.4.20
Date: Wed, 22 Jan 2003 21:26:40 +0100 [thread overview]
Message-ID: <20030122202640.GA17661@coker.com.au> (raw)
The following patch was back-ported from 2.5.x by Stephen Smalley to fix a
problem where the file handle of the root of the initrd is inherited by init
and other processes.
The bug was discovered when running SE Linux on 2.4.20 systems with a policy
that denied such inheriting of file handles and logged the operations it
denied.
This patch has been well tested, please include it in 2.4.21.
--- linux-2.4.20.lsm-old/init/do_mounts.c 2002-12-13 19:33:23.000000000 +0100
+++ linux-2.4.20.lsm/init/do_mounts.c 2002-12-13 19:36:48.000000000 +0100
@@ -812,6 +812,8 @@
/* switch root and cwd back to / of rootfs */
sys_fchdir(root_fd);
sys_chroot(".");
+ close(old_fd);
+ close(root_fd);
sys_umount("/old/dev", 0);
if (real_root_dev == ram0) {
reply other threads:[~2003-01-22 20:17 UTC|newest]
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