lkml.org 
[lkml]   [2011]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Using ftrace/perf as a basis for generic seccomp
From
Date
On Sat, 2011-02-05 at 12:51 +0100, Stefan Fritsch wrote:

> A really major use case is socketcall(2). All socket related syscalls
> (accept, bind, connect, receivemsg, ...) are implemented as socketcall
> with an appropriate argument. There will be many cases where you want a
> sandboxed process to be able to do recvmsg(2) to receive new file
> descriptors over an already open unix-domain socket from a broker process.
> But you may want to disallow other socket operations, especially listen,
> accept, and connect.
>
> Of course one could also add some special case handling for socketcall
> in seccomp instead of using the full filtering.

That looks like a perfect use-case for the LSM bits, attach some state
to both the fd object and the task object and if they don't match, don't
allow the action.





\
 
 \ /
  Last update: 2011-02-07 13:27    [W:0.149 / U:0.168 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site