From owner-cvs-all  Sat Feb  3 17:52:31 2001
Delivered-To: cvs-all@freebsd.org
Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP
	id 0A05B37B503; Sat,  3 Feb 2001 17:52:12 -0800 (PST)
Received: (from iedowse@localhost)
	by freefall.freebsd.org (8.11.1/8.11.1) id f141qB433351;
	Sat, 3 Feb 2001 17:52:11 -0800 (PST)
	(envelope-from iedowse)
Message-Id: <200102040152.f141qB433351@freefall.freebsd.org>
From: Ian Dowse <iedowse@FreeBSD.org>
Date: Sat, 3 Feb 2001 17:52:11 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/ufs/ufs ufs_lookup.c
X-FreeBSD-CVS-Branch: HEAD
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

iedowse     2001/02/03 17:52:11 PST

  Modified files:
    sys/ufs/ufs          ufs_lookup.c 
  Log:
  Extend the sanity checks in ufs_lookup to ensure that each directory
  entry fits within its DIRBLKSIZ block. The surrounding code is
  extremely fragile with respect to corruption of the directory entry
  'd_reclen' field; if directory corruption occurs, it can blindly
  scan forward beyond the end of the filesystem block. Usually this
  results in a 'fault on nofault entry' panic.
  
  Directory corruption is now much more likely to be detected, resulting
  in a 'ufs_dirbad' panic. If the filesystem is read-only, it will
  simply print a warning message, and skip the corrupted block.
  
  Reviewed by:	mckusick
  
  Revision  Changes    Path
  1.45      +3 -2      src/sys/ufs/ufs/ufs_lookup.c



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message