Messages in this thread | | | Date | Sat, 18 Feb 2006 20:28:49 +0100 | From | Patrick McHardy <> | Subject | Re: [PATCH 2.6.15.4 1/1][RFC] ipt_owner: inode match supporting both incoming and outgoing packets |
| |
Török Edwin wrote: > First of all this is what I'd like to achieve: > - filter packets by the program who sent the packet > - filter packets by the program who is going to receive the packet > - when multiple programs share a socket (i.e. they listen on the same socket), > allow the packet only if all programs are allowed to receive the packet
Besides the tasklist_lock issues, there is no 1:1 relationship between sockets and processes, which is why this can never work. You don't know which process is going to receive a packet until it calls recvmsg().
There is some work in progress to solve this problem in a different way, by adding new hooks to the protocols that get the socket as context, and using SElinux labels instead of process names/inodes/whatever for matching. - 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/
| |