lkml.org 
[lkml]   [2001]   [Jan]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: Subtle MM bug
From
>>>>> " " == Stephen C Tweedie <sct@redhat.com> writes:

> Hi, On Wed, Jan 10, 2001 at 12:11:16PM -0800, Linus Torvalds
> wrote:
>>
>> That said, we can easily support the notion of CLONE_CRED if we
>> absolutely have to (and sane people just shouldn't use it), so
>> if somebody wants to work on this for 2.5.x...

> But is it really worth the pain? I'd hate to have to audit the
> entire VFS to make sure that it works if another thread changes
> our credentials in the middle of a syscall, so we either end up
> having to lock the credentials over every VFS syscall, or take
> a copy of the credentials and pass it through every VFS
> internal call that we make.

What's wrong with copy-on-write style semantics? IOW, anyone who
wants to change the credentials needs to make a private copy of the
existing structure first.

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

\
 
 \ /
  Last update: 2005-03-22 13:22    [W:0.109 / U:0.772 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site