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Message-ID: <462AB061.2070104@cs.columbia.edu> Date: Sat, 21 Apr 2007 20:46:25 -0400 From: Shaya Potter <spotter@...columbia.edu> To: Andrew Morton <akpm@...ux-foundation.org> CC: Miklos Szeredi <miklos@...redi.hu>, serue@...ibm.com, viro@....linux.org.uk, linuxram@...ibm.com, ebiederm@...ssion.com, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, containers@...ts.osdl.org Subject: Re: [patch 7/8] allow unprivileged mounts Andrew Morton wrote: > On Fri, 20 Apr 2007 12:25:39 +0200 Miklos Szeredi <miklos@...redi.hu> wrote: > >> Define a new fs flag FS_SAFE, which denotes, that unprivileged >> mounting of this filesystem may not constitute a security problem. >> >> Since most filesystems haven't been designed with unprivileged >> mounting in mind, a thorough audit is needed before setting this flag. > > Practically speaking, is there any realistic likelihood that any filesystem > apart from FUSE will ever use this? Would it be interesting to support mounting of external file systems (be it USB, NFS or whatever) in a way that automatically forces it to ignore suid and devices (which are already mount time options)? The question I guess is, how much do you gain over a setuid program (hack?) that can handle this? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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