Date: Mon, 9 Apr 2001 00:16:22 +0400 (MSD) From: .@babolo.ru To: bra@fsn.hu (Attila Nagy) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Mounting partitions with RO flag Message-ID: <200104082016.AAA16747@aaz.links.ru> In-Reply-To: <20010408210425.J45749-100000@scribble.fsn.hu> from "Attila Nagy" at "Apr 8, 1 09:13:15 pm"
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Attila Nagy writes: > I have a really stupid question, so please forgive me if the answer is > trivial for you... > > With the appearing of the jail() in 4.0 I think it would be very good to > have the functionality of mounting already mounted (RW) filesystems read > only to another directory. > > For example there are several daemons which can run on a read only > filesystem, like an anonymous FTP daemon for extra security in a jail. > > nullfs and unionfs would be suitable for these tasks but they have > problems in at least -STABLE, so there are only hacks for doing this, like > NFS mounted filesystems and partition "magic" (defining a lot of > partitions onto the same physical space). > > So I am wondering, why the unices block mounting an already mounted > partition read only again. > > Would it be possible to solve this under FreeBSD? I am second for it. I am using some partition "magic" and know dark side of it. > -------------------------------------------------------------------------- > Attila Nagy e-mail: Attila.Nagy@fsn.hu > Budapest Polytechnic (BMF.HU) @work: +361 210 1415 (194) > H-1084 Budapest, Tavaszmezo u. 15-17. cell.: +3630 306 6758 -- @BABOLO http://links.ru/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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