From: "Ihar 'Philips' Filipau" <filia@softhome.net>
To: Rogier Wolff <R.E.Wolff@BitWizard.nl>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: OT: why no file copy() libc/syscall ??
Date: Tue, 11 Nov 2003 16:31:23 +0100 [thread overview]
Message-ID: <3FB100CB.1010209@softhome.net> (raw)
In-Reply-To: <20031111150256.GA13283@bitwizard.nl>
Rogier Wolff wrote:
>
> Fine. For compatibilty we'll leave "sendfile" in place. But if somehow
> someone builds a filesystem which cannot use the pagecache, then
> "sendfile" will fail. Or if somehow we manage to get the socket hooked
> up to something else (*). Either CVS needs to handle that case
> internally, or it will fail. In the first case, that causes extra code
> in lots of applications that want to continue to work, in the latter
> case, it's bad.
>
I beleive - if you really want to have something like this - you need
to go to e.g. nfs/coda/smbfs developers and talk with them: how it can
be implemented in this situations.
Implement it with ioctl() - to really see make it sense or it just
complicates things enourmously. Actually given networked file systems
could be just NOT capable of this kind of operation at all.
Insisting on new syscall is silly: syscall is interface - it has
nothing to do with functionality. Ocasionally syscalls are used to
access functionality ;-) So start from functionality first. Syscall (or
whatever interface will fit better) can be implemented in 15 minutes any
time after functionality is in place.
--
Ihar 'Philips' Filipau / with best regards from Saarbruecken.
-- _ _ _
"... and for $64000 question, could you get yourself |_|*|_|
vaguely familiar with the notion of on-topic posting?" |_|_|*|
-- Al Viro @ LKML |*|*|*|
next prev parent reply other threads:[~2003-11-11 15:31 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Qvw7.5Qf.9@gated-at.bofh.it>
[not found] ` <QxRl.17Y.9@gated-at.bofh.it>
[not found] ` <Qy0W.1sk.9@gated-at.bofh.it>
[not found] ` <QyaB.1GK.17@gated-at.bofh.it>
[not found] ` <QzSZ.4x1.1@gated-at.bofh.it>
[not found] ` <QCHh.X6.3@gated-at.bofh.it>
2003-11-11 9:51 ` OT: why no file copy() libc/syscall ?? Ihar 'Philips' Filipau
2003-11-11 10:41 ` jw schultz
[not found] ` <QH4e.eV.3@gated-at.bofh.it>
2003-11-11 14:11 ` Ihar 'Philips' Filipau
2003-11-11 15:02 ` Rogier Wolff
2003-11-11 15:31 ` Ihar 'Philips' Filipau [this message]
2003-11-11 20:22 ` Jan Harkes
2003-11-11 20:31 ` Valdis.Kletnieks
[not found] <1068512710.722.161.camel@cube.suse.lists.linux.kernel>
[not found] ` <20031111133859.GA11115@bitwizard.nl.suse.lists.linux.kernel>
[not found] ` <20031111085323.M8854@devserv.devel.redhat.com.suse.lists.linux.kernel>
[not found] ` <bp0p5m$lke$1@cesium.transmeta.com.suse.lists.linux.kernel>
[not found] ` <20031113233915.GO1649@x30.random.suse.lists.linux.kernel>
[not found] ` <3FB4238A.40605@zytor.com.suse.lists.linux.kernel>
[not found] ` <20031114011009.GP1649@x30.random.suse.lists.linux.kernel>
[not found] ` <3FB42CC4.9030009@zytor.com.suse.lists.linux.kernel>
2003-11-14 15:26 ` Andi Kleen
2003-11-18 15:49 ` Jamie Lokier
2003-11-18 16:05 ` Andi Kleen
2003-11-18 16:25 ` Trond Myklebust
2003-11-19 13:30 ` Jesse Pollard
2003-11-18 16:58 ` H. Peter Anvin
2003-11-19 2:12 ` Linus Torvalds
2003-11-19 4:04 ` Chris Adams
[not found] <QDtX.2dq.15@gated-at.bofh.it>
[not found] ` <QDtX.2dq.17@gated-at.bofh.it>
[not found] ` <QDtX.2dq.19@gated-at.bofh.it>
[not found] ` <QDtX.2dq.21@gated-at.bofh.it>
[not found] ` <QDtX.2dq.23@gated-at.bofh.it>
[not found] ` <QDtY.2dq.25@gated-at.bofh.it>
[not found] ` <QDtX.2dq.13@gated-at.bofh.it>
[not found] ` <QEg2.3zi.9@gated-at.bofh.it>
2003-11-11 12:43 ` Ihar 'Philips' Filipau
2003-11-11 1:05 Albert Cahalan
2003-11-11 3:50 ` Andreas Dilger
2003-11-11 4:03 ` Daniel Gryniewicz
2003-11-11 4:14 ` Valdis.Kletnieks
2003-11-11 6:00 ` Andreas Dilger
2003-11-11 8:58 ` Florian Weimer
2003-11-11 10:27 ` jw schultz
2003-11-11 20:08 ` Jan Harkes
2003-11-12 15:36 ` Jesse Pollard
2003-11-20 17:21 ` Florian Weimer
2003-11-20 19:08 ` Jesse Pollard
2003-11-20 19:12 ` Florian Weimer
2003-11-20 19:44 ` Justin Cormack
2003-11-20 20:44 ` Timothy Miller
2003-11-20 21:07 ` Andreas Dilger
2003-11-20 21:30 ` Timothy Miller
2003-11-20 21:49 ` Maciej Zenczykowski
2003-11-20 21:52 ` Timothy Miller
2003-11-20 21:58 ` Hua Zhong
2003-11-22 14:50 ` Pavel Machek
2003-11-22 19:50 ` Jamie Lokier
2003-11-22 23:07 ` Andreas Schwab
2003-11-21 16:24 ` Jesse Pollard
2003-11-20 21:48 ` Maciej Zenczykowski
2003-11-21 16:34 ` Jesse Pollard
2003-11-20 22:31 ` Xavier Bestel
2003-11-20 22:44 ` Andreas Dilger
2003-11-27 2:40 ` Robert White
2003-11-27 7:29 ` Nick Piggin
2003-11-27 9:15 ` David Lang
2003-11-27 8:56 ` Nick Piggin
2003-11-27 9:50 ` David Lang
2003-11-27 10:02 ` Jörn Engel
2003-11-27 10:58 ` David Lang
2003-12-01 16:20 ` Jesse Pollard
2003-11-11 8:52 ` Gábor Lénárt
2003-11-11 13:38 ` Rogier Wolff
2003-11-11 13:53 ` Jakub Jelinek
2003-11-11 13:58 ` David Woodhouse
2003-11-13 20:22 ` H. Peter Anvin
2003-11-13 23:39 ` Andrea Arcangeli
2003-11-14 0:04 ` jw schultz
2003-11-14 0:36 ` H. Peter Anvin
2003-11-14 1:10 ` Andrea Arcangeli
2003-11-14 1:15 ` H. Peter Anvin
2003-11-11 14:11 ` Albert Cahalan
2003-11-12 15:19 ` Jesse Pollard
2003-11-14 3:42 ` Albert Cahalan
-- strict thread matches above, loose matches on Subject: below --
2003-11-10 12:09 Bradley Chapman
2003-11-10 18:47 ` Tomas Konir
2003-11-10 22:44 ` Derek Foreman
[not found] <QiyV.1k3.15@gated-at.bofh.it>
2003-11-10 12:08 ` Ihar 'Philips' Filipau
2003-11-10 13:29 ` Jesse Pollard
2003-11-10 14:22 ` Daniel Jacobowitz
2003-11-11 20:57 ` Jakob Oestergaard
2003-11-10 15:19 ` David Woodhouse
2003-11-10 16:15 ` Jesse Pollard
2003-11-11 12:00 ` davide.rossetti
2003-11-11 12:08 ` Andreas Schwab
2003-11-11 12:23 ` davide.rossetti
2003-11-10 11:33 Davide Rossetti
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