Re: [RFC][PATCH 0/3] Access Control Lists for tmpfs and /dev/pts

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

 



On Wed, 2 Feb 2005, Andreas Gruenbacher wrote:

On Wed, 2005-02-02 at 17:55, Christoph Hellwig wrote:
On Wed, Feb 02, 2005 at 05:13:40PM +0100, Andreas Gruenbacher wrote:
Here is a set of three patches which implement some general
infrastructure and on top of that, acls for tmpfs and /dev/pts files.

Why would you want ACLs on /dev/pts?

That's actually a good question. The patch allows to give several people
access to the same terminal, which sometimes comes in handy with tools
like screen (at least in its current version), and that's what the patch
originally was meant for. I've just talked this over this with one of
the maintainers though, and there are probably better ways than handling
this at the file permission level, like passing open file descriptors
between processes. So unless somebody comes up with a convincing
application, that patch probably should stay out.
Aside from the above reason, I believe the mechanism behind the write command should also be considered. The notifications generated by write can currently be enabled and disabled only through an "all-on" or "all-off" mechanism - it doesn't leave room for user- or group-specific permissions because it's based on the mode of the TTY special file.

ACL support in devpts would allow much more fine-grained control of who is allowed and who is denied access to writing messages on your terminal. This would come in very handy and I personally believe it should be possible to have such control.

Sorry for the random post and thanks for considering this reason,
Catalin Patulea

Cheers,
--
Andreas Gruenbacher <[email protected]>
SUSE Labs, SUSE LINUX GMBH

-
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/



-----------------------------------------
Catalin Patulea       VV Volunteer 2002,3
http://vv.carleton.ca/~cat/  VV HI 2004,5
[email protected]
-
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]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux