linux-kernel - Re: [PATCH] utimensat implementation

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Date:	Fri, 27 Apr 2007 16:15:59 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ulrich Drepper <drepper@...hat.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] utimensat implementation

Ulrich Drepper wrote:
> H. Peter Anvin wrote:
>> Primarily to let a backup program restore the full state of the filesystem.
> 
> Is this wanted?  Or needed?  I would think there are good reasons why
> this hasn't been done so far.  Intrusion detection is one reason I can
> think of.

Well, dump/restore -- the traditional Unix backup solution -- went "the
back way" to restore the times in the filesystem.

The main use of atime seems to be to figure out when something can be
automatically deleted.  Anyone else have other usage scenarios?

	-hpa

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