Re: [patch 0/8] unprivileged mount syscall

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Quoting Ian Kent (raven@xxxxxxxxxx):
> On Wed, 2007-04-11 at 12:48 +0200, Miklos Szeredi wrote:
> > > > >>
> > > > >> - users can use bind mounts without having to pre-configure them in
> > > > >>   /etc/fstab
> > > > >>
> > > > 
> > > > This is by far the biggest concern I see.  I think the security 
> > > > implication of allowing anyone to do bind mounts are poorly understood.
> > > 
> > > And especially so since there is no way for a filesystem module to veto
> > > such requests.
> > 
> > The filesystem can't veto initial mounts based on destination either.
> > I don't think it's up to the filesystem to police bind/move mounts in
> > any way.
> 
> But if a filesystem can't or the developer thinks that it shouldn't for
> some reason, support bind/move mounts then there should be a way for the

Can you list some valid reasons why an fs could care where it is
mounted?  The only thing I could think of is a stackable fs, but it
shouldn't care whether it is overlay-mounted or not.

thanks,
-serge

> filesystem to tell the kernel that.
> 
> Surely a filesystem is in a good position to be able to decide if a
> mount request "for it" should be allowed to continue based on it's "own
> situation and capabilities".
> 
> Ian
> 
> 
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux