From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: futimes()?
Date: 3 Feb 2003 11:07:15 -0800 [thread overview]
Message-ID: <b1mel3$fug$1@cesium.transmeta.com> (raw)
In-Reply-To: 20030202120752.GK5239@riesen-pc.gr05.synopsys.com
Followup to: <20030202120752.GK5239@riesen-pc.gr05.synopsys.com>
By author: Alex Riesen <alexander.riesen@synopsys.COM>
In newsgroup: linux.dev.kernel
>
> H. Peter Anvin, Sun, Feb 02, 2003 02:53:22 +0100:
> > In the general vein of avoiding security holes by using file
> > descriptors when doing repeated operations on the same filesystem
> > object, I have noticed that there doesn't seem to be a way to set
> > mtime using a file descriptor. Do we need a futimes() syscall?
>
> There is a small problem with close(). It can update mtime as well.
>
Presumably it shouldn't unless the file descriptor has been written
to since the last fsync().
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
Architectures needed: cris ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
next prev parent reply other threads:[~2003-02-03 18:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-02 1:53 futimes()? H. Peter Anvin
2003-02-02 8:48 ` futimes()? Abramo Bagnara
2003-02-02 12:07 ` futimes()? Alex Riesen
2003-02-03 19:07 ` H. Peter Anvin [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-02-02 18:59 futimes()? Adam J. Richter
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