From owner-freebsd-current  Fri Apr 20  9:43:58 2001
Delivered-To: freebsd-current@freebsd.org
Received: from ipcard.iptcom.net (ipcard.iptcom.net [212.9.224.5])
	by hub.freebsd.org (Postfix) with ESMTP
	id 4DDFC37B423; Fri, 20 Apr 2001 09:43:32 -0700 (PDT)
	(envelope-from sobomax@FreeBSD.org)
Received: from vic.sabbo.net (dialup15-8.iptelecom.net.ua [212.9.229.136])
	by ipcard.iptcom.net (8.9.3/8.9.3) with ESMTP id TAA02813;
	Fri, 20 Apr 2001 19:43:22 +0300 (EEST)
	(envelope-from sobomax@FreeBSD.org)
Received: from FreeBSD.org (big_brother.vega.com [192.168.1.1])
	by vic.sabbo.net (8.11.3/8.11.2) with ESMTP id f3KGg9229112;
	Fri, 20 Apr 2001 19:42:09 +0300 (EEST)
	(envelope-from sobomax@FreeBSD.org)
Message-ID: <3AE066C0.6B375985@FreeBSD.org>
Date: Fri, 20 Apr 2001 19:41:36 +0300
From: Maxim Sobolev <sobomax@FreeBSD.org>
Organization: Vega International Capital
X-Mailer: Mozilla 4.77 [en] (WinNT; U)
X-Accept-Language: uk,ru,en
MIME-Version: 1.0
To: Konstantin Chuguev <Konstantin.Chuguev@dante.org.uk>
Cc: Ruslan Ermilov <ru@FreeBSD.org>, Bruce Evans <bde@FreeBSD.org>,
	current@FreeBSD.org, hackers@FreeBSD.org
Subject: Re: [CFR] OpenBSD install(1) fixes: atomic install, etc.
References: <20010420191008.A51313@sunbay.com> <3AE06267.BE44852F@dante.org.uk>
Content-Type: text/plain; charset=koi8-r
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Konstantin Chuguev wrote:

> Hi,
>
> Ruslan Ermilov wrote:
>
> > The attached patch incorporates most of OpenBSD fixes to install(1).
> > It does not include manpage update.  Most significant changes are:
> >
> > o New flag: -S (atomic install)
> >
> > : -S    Safe copy.  Normally, install unlinks an existing target before
> > :       installing the new file.  With the -S flag a temporary file is
> > :       used and then renamed to be the target.  The reason this is safer
> > :       is that if the copy or rename fails, the existing target is left
> > :       untouched.
> >
>
> Just curious: why not make this way of doing install default (i.e. always use
> it)?

It may effectively doubles disk space requirements during copy (when destination
file is not on a sofdep-enabled partition and is not open at the moment when
install(8) unlinks it). For small files it doesn't matter, but for a big ones it
could lead to a problem.

-Maxim


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message