From: Derek Fawcus <dfawcus@cisco.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Acme mailreader - now: User mode filesystems in linux
Date: Fri, 17 Dec 2004 13:41:09 +0000 [thread overview]
Message-ID: <20041217134109.N17074@edinburgh.cisco.com> (raw)
In-Reply-To: <20041217152456.3f377069.martin_ml@parvat.com>; from martin_ml@parvat.com on Fri, Dec 17, 2004 at 03:24:56PM +0530
On Fri, Dec 17, 2004 at 03:24:56PM +0530, Martin C.Atkins wrote:
> 2) The user-filesystem-daemon only has to run as root during initialisation,
> everything else runs as the user.
>
> 3) The user-filesystem-daemon can enforce file ownership (as the user) in
> the served directory hierarchy. It can also force off setuid bits, etc.
> Furthermore, users can only attach their fileservers to their own daemons!
> (A bit like per-process mount tables - of course, linux has this already, but
> not in a very user-friendly form)
So while it's running, I can use gdb to attach to it and get around any security
it's trying to enforce (turn setuid back on, change ownership to root, etc).
DF
next prev parent reply other threads:[~2004-12-17 13:41 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-15 15:34 [9fans] Acme mailreader jim
2004-12-15 15:40 ` gdiaz
2004-12-15 15:47 ` jim
2004-12-15 15:50 ` Joseph Stewart
2004-12-15 15:57 ` jim
2004-12-15 16:10 ` Russ Cox
2004-12-15 15:58 ` Charles Forsyth
2004-12-15 16:04 ` jim
2004-12-15 16:24 ` C H Forsyth
2004-12-15 16:31 ` jim
2004-12-15 17:07 ` Russ Cox
2004-12-15 17:30 ` jim
2004-12-15 18:33 ` Russ Cox
2004-12-15 18:49 ` jim
2004-12-15 18:36 ` Axel Belinfante
2004-12-15 18:47 ` jim
2004-12-15 18:51 ` rog
2004-12-15 18:48 ` Skip Tavakkolian
2004-12-15 16:05 ` rog
2004-12-15 16:07 ` rog
2004-12-15 16:09 ` jim
2004-12-16 0:24 ` geoff
2004-12-16 4:12 ` Ronald G. Minnich
2004-12-16 4:51 ` geoff
2004-12-16 9:25 ` jim
2004-12-16 5:13 ` Skip Tavakkolian
2004-12-16 5:17 ` geoff
2004-12-16 5:20 ` boyd, rounin
2004-12-16 5:34 ` boyd, rounin
2004-12-16 5:29 ` Skip Tavakkolian
2004-12-16 15:54 ` Ronald G. Minnich
2004-12-16 17:52 ` Skip Tavakkolian
2004-12-16 18:13 ` Dave Eckhardt
2004-12-16 5:23 ` Andy Newman
2004-12-16 15:52 ` Ronald G. Minnich
2004-12-16 8:17 ` Martin C.Atkins
2004-12-16 9:35 ` jim
2004-12-16 15:19 ` rog
2004-12-16 15:26 ` jim
2004-12-16 9:30 ` jim
2004-12-16 15:08 ` David Leimbach
2004-12-16 23:22 ` geoff
2004-12-16 23:25 ` boyd, rounin
2004-12-16 23:38 ` Ronald G. Minnich
2004-12-17 1:31 ` Skip Tavakkolian
2004-12-17 15:50 ` Ronald G. Minnich
2004-12-17 4:55 ` [9fans] Acme mailreader - now: User mode filesystems in linux Martin C.Atkins
2004-12-17 9:54 ` Martin C.Atkins
2004-12-17 10:22 ` geoff
2004-12-17 10:45 ` Martin C.Atkins
2004-12-17 11:42 ` Andy Newman
2004-12-17 15:57 ` Ronald G. Minnich
2004-12-17 12:30 ` Latchesar Ionkov
2004-12-17 15:55 ` Ronald G. Minnich
2004-12-17 13:41 ` Derek Fawcus [this message]
2004-12-17 14:42 ` Karl Magdsick
2004-12-17 14:56 ` Russ Cox
2004-12-18 0:13 ` Tim Newsham
2004-12-18 0:13 ` boyd, rounin
2004-12-18 3:49 ` Ronald G. Minnich
2004-12-23 16:04 ` boyd, rounin
2004-12-17 15:44 ` Ronald G. Minnich
2004-12-18 12:35 ` Martin C.Atkins
2004-12-17 18:52 ` [9fans] Acme mailreader David Leimbach
2004-12-17 23:20 ` Jack Johnson
2004-12-18 1:00 ` David Leimbach
2004-12-15 16:09 ` Russ Cox
2004-12-15 16:16 ` jim
2004-12-15 16:22 ` boyd, rounin
2004-12-17 15:31 [9fans] Acme mailreader - now: User mode filesystems in linux bmaroshe
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