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Date: Thu, 24 May 2007 20:30:23 GMT
Message-Id: <200705242030.l4OKUNil018530@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: Nicolas Rachinsky <nicolas-2007@rachinsky.de>
Cc: 
Subject: Re: bin/39849: /sbin/restore fails to overwrite files with schg
	flag set
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The following reply was made to PR bin/39849; it has been noted by GNATS.

From: Nicolas Rachinsky <nicolas-2007@rachinsky.de>
To: cjclark@alum.mit.edu
Cc: bug-followup@FreeBSD.org, mad1@tapil.com
Subject: Re: bin/39849: /sbin/restore fails to overwrite files with schg
	flag set
Date: Thu, 24 May 2007 22:23:56 +0200

 * "Crist J. Clark" <cristclark@comcast.net> [2007-05-24 12:53 -0700]:
 > On Thu, May 24, 2007 at 02:26:21PM +0200, Nicolas Rachinsky wrote:
 > > >Before a restore(8) is fairly trivial.
 > > 
 > > But restore does not set all the flags again.
 > > 
 > > So you either have to loose some flags or some file changes if you
 > > restore a multi level backup.
 > 
 > What flags does restore(8) not preserve?
 
 The flags of the files not touched by the following restore run.
 
 > But there still can be a problem. If you do "chflags -R",
 > you will lose the flag on any file that doesn't get touched
 > by the restore(8).
 
 These.
 
 > You could use find(1) to generate a list and then use the
 > list to reset the flags after. But that is a kludge.
 
 And you might preserve flags that shouldn't be preserved, since they
 were not during the backup (restored after the find).
 
 > An option on dump(8) to force rewriting on schg files (when
 > securelevel(8) allows) is probably appropriate, but as
 > discussed, when you start to consider directories, it becomes
 > non-trivial to implement.
 
 Yes.
 
 > Unfortunately, this PR is coming up on its fifth birthday
 > and I don't do FreeBSD work anymore. Feel free to submit
 > patches against a more modern CURRENT and STABLE.
 
 I noticed this problem today. And the (incomplete) patch in the PR
 was (kind of) rejected by you.
 
 I will try to find some time to look at this.
 
 Nicolas