Re: [RFC][PATCH 00/20] Mount writer count and read-only bind mounts (v2)

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

 



On Fri, 16 Jun 2006, Dave Hansen wrote:
The following series implements read-only bind mounts.  This feature
allows a read-only view into a read-write filesystem.

Thanks, I like this idea very much. I think I have found at least one good
use for it even before it is merged. :-)

But...

One note: the previous patches all worked this way:

	mount --bind -o ro /source /dest

These patches have changed that behavior.  It now requires two steps:

	mount --bind /source /dest
	mount -o remount,ro  /dest

Isn't this some kind of security risk (at least in my planned use)? I mean - for a small fraction of second somebody seeing /dest can write /source... No?


Thanks,

Grzegorz Kulewski

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux