From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zach Brown Subject: Re: [PATCH] configfs, a filesystem for userspace-driven kernel object configuration Date: Tue, 05 Apr 2005 11:03:42 -0700 Message-ID: <4252D2FE.5010500@zabbo.net> References: <20050403195728.GH31163@ca-server1.us.oracle.com> <1112635079.6270.68.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Joel Becker , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Return-path: Received: from tetsuo.zabbo.net ([207.173.201.20]:53208 "EHLO tetsuo.zabbo.net") by vger.kernel.org with ESMTP id S261861AbVDESDh (ORCPT ); Tue, 5 Apr 2005 14:03:37 -0400 To: Arjan van de Ven In-Reply-To: <1112635079.6270.68.camel@laptopd505.fenrus.org> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Arjan van de Ven wrote: > On Sun, 2005-04-03 at 12:57 -0700, Joel Becker wrote: > >>Folks, >> I humbly submit configfs. With configfs, a configfs >>config_item is created via an explicit userspace operation: mkdir(2). >>It is destroyed via rmdir(2). The attributes appear at mkdir(2) time, >>and can be read or modified via read(2) and write(2). readdir(3) >>queries the list of items and/or attributes. >> The lifetime of the filesystem representation is completely >>driven by userspace. The lifetime of the objects themselves are managed >>by a kref, but at rmdir(2) time they disappear from the filesystem. > > > does that mean you rmdir a non-empty directory ?? Yeah, but only attributes and default groups are automatically torn down. You can't rmdir() an item that is the destination of links and you can't rmdir() groups that still contain items. - z