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From: Sergey Vlasov <vsu@altlinux.ru>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: Re: [devel] O_NOATIME behaviour changed in linux-2.6?
Date: Tue, 13 Jun 2006 20:31:55 +0400
Message-ID: <20060613163155.GF3206@master.mivlgu.local> (raw)
In-Reply-To: <20060613155340.GF10544@basalt.office.altlinux.org>

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On Tue, Jun 13, 2006 at 07:53:40PM +0400, Dmitry V. Levin wrote:
> On Tue, Jun 13, 2006 at 07:47:25PM +0400, Alexey Tourbin wrote:
> > On Tue, Jun 13, 2006 at 07:25:28PM +0400, Dmitry V. Levin wrote:
> [...]
> > > > Ещё хотелось бы использовать O_NOATIME, но это требует слишком больших
> > > > привилегий (CAP_FOWNER, как я понял из man capabilities).
> > > Да нет, вроде бы не требует.
> > 
> > $ strace -o /dev/stdout -- perl -MFcntl=O_RDONLY,O_NOATIME -e 'sysopen FH, "/etc/passwd", O_RDONLY|O_NOATIME or die $!' |grep 'open(.*passwd'                                                           
> > open("/etc/passwd", O_RDONLY|O_LARGEFILE|O_NOATIME) = -1 EPERM (Operation not permitted)
> > Operation not permitted at -e line 1.
> 
> А на 2.4.32 работает.  Нужен комментарий ядерщиков.

2.4 вообще не поддерживает флаг O_NOATIME; похоже, нереализованные флаги
там просто игнорируются.

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  reply	other threads:[~2006-06-13 16:31 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-13 10:06 [devel] sucap не работает Alexey Tourbin
2006-06-13 12:13 ` Dmitry V. Levin
2006-06-13 12:52   ` [devel] psec O_NOATIME Alexey Tourbin
2006-06-13 15:25     ` Dmitry V. Levin
2006-06-13 15:47       ` Alexey Tourbin
2006-06-13 15:51         ` Dmitry V. Levin
2006-06-13 16:25           ` Alexey Tourbin
2006-06-13 15:53         ` [devel] O_NOATIME behaviour changed in linux-2.6? Dmitry V. Levin
2006-06-13 16:31           ` Sergey Vlasov [this message]
2006-06-13 15:04   ` [devel] sucap не работает Alexey Tourbin
2006-06-13 15:30     ` [devel] sucap + execcap = Alexey Tourbin
2006-06-13 19:22       ` Alexey Tourbin
2006-06-14 22:12         ` Dmitry V. Levin

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