From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <54AD77A0.1010206@siemens.com> Date: Wed, 07 Jan 2015 19:14:56 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <54A67CD1.10103@web.de> <54A69D42.2010408@xenomai.org> <54A69BFA.7060405@web.de> <54A6A506.3060504@xenomai.org> <54A6A387.4010109@web.de> <20150102141625.GD1492@daedalus> <20150102150638.GE1492@daedalus> <54A6C072.7020303@web.de> <20150103194050.GH12052@daedalus> <54A84E6E.2040501@web.de> <20150103222509.GA6409@hermes.click-hack.org> In-Reply-To: <20150103222509.GA6409@hermes.click-hack.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai] [Xenomai-git] Philippe Gerum: copperplate: add configuration tunable for registry moint point List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gilles Chanteperdrix Cc: Xenomai On 2015-01-03 23:25, Gilles Chanteperdrix wrote: >>> >>> Alternatively (to the last item), the sysregd could be made suid >>> root, create the session directory if it does not exist with root >>> permissions but with the target user as owner, then drop root >>> privileges and continue as a normal user. >> >> Should work, but unless I stumbled over fundamental issues why sysregd >> is not working as normal user right now, I don't see a technical need >> for this big hammer for user-managed sessions. > > The enormous advantage of using the big hammer (in fact, only if we > put the three changes into it), is that it avoids explaining things > to the users, and avoids as well questions on the mailing list. > Given the number of questions we have had about /dev/rtheap and > /dev/rtpipe, this would be a win. We actually need the big suid-hammer: only root has the permission to clean up the mounts of other users. Obsoletes my fusermount -u patch. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux