lkml.org 
[lkml]   [2003]   [Aug]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] bug in setpgid()? process groups and thread groups
From
Date
On Sat, 2003-08-02 at 12:08, Roland McGrath wrote:
> The problem exists with uids/gids as well, in the sense that they are
> changed per-thread but POSIX semantics are that setuid et al affect the
> whole process (i.e. all threads in a thread group).

Is there any particular reason why the POSIX semantics are desirable
(besides "that's the way POSIX says it should be")?

Personally, I can think of no benenfit to per-process uids/gids, and
several scenarios where per-thread uids/gids would be good. (Think of a
multi-threaded server handling connections from N different users on N
threads, or a 1 thread per CPU server handling many different user
connections, or a multi-threaded web server running perl/php/etc. stuff
as different users in different threads.)

Just wondering, Nicholas.

-
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: 2005-03-22 13:47    [W:0.044 / U:0.836 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site