lkml.org 
[lkml]   [2006]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] set*uid() must not fail-and-return on OOM/rlimits
> Arjan van de Ven wrote:
> > sounds like a good argument to get the setuid functions marked
> > __must_check in glibc...

I agree.

On Sun, Aug 20, 2006 at 09:28:51AM -0700, Ulrich Drepper wrote:
> There are too many false positives. E.g., in a SUID binaries switching
> back from a non-root UID to root will not fail. Very common.

I wouldn't call those false positives. They're warnings of poorly
written code that might fail with further changes to the kernel or with
custom security modules, or on another Unix-like platform.

Of course, the kernel or security modules must not change the semantics
arbitrarily yet expect old apps to work, however expecting that apps
honor return value from set*[ug]id() would be reasonable. (The only
reason why it is not is that there are so many broken apps out there and
more are being developed.)

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

\
 
 \ /
  Last update: 2006-08-20 18:55    [W:0.864 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site