Currently a packet accumulates multiple security identifiers, each of a different class, as it enters the system. This patch set reconciles these identifiers into a single identifier while also allowing LSM (SELinux is addressed in this patch set) to impose flow control checks based on the identifiers.
The reconciliation steps for SELinux are explained in the Labeled Networking document at: http://marc.theaimsgroup.com/?l=linux-netdev&m=115136637800361&w=2 The following are the identifiers handled here: 1. secmark on the skb 2. xfrm security identifier associated with the skb if it used any xfrms, a zero secid otherwise. This patch: Add new flask definitions to SELinux Adds a new avperm "come_thru" to arbitrate among the identifiers on the inbound (input/forward). Also adds a new avperm "go_thru" to enable flow control checks on the outbound (output/forward), addressed in a later patch. Signed-off-by: Venkat Yekkirala <[EMAIL PROTECTED]> --- av_perm_to_string.h | 2 ++ av_permissions.h | 2 ++ 2 files changed, 4 insertions(+) --- linux-2.6.17.child_sock/security/selinux/include/av_permissions.h 2006-07-31 09:36:24.000000000 -0500 +++ linux-2.6.17/security/selinux/include/av_permissions.h 2006-07-31 10:20:16.000000000 -0500 @@ -962,6 +962,8 @@ #define PACKET__SEND 0x00000001UL #define PACKET__RECV 0x00000002UL #define PACKET__RELABELTO 0x00000004UL +#define PACKET__COME_THRU 0x00000008UL +#define PACKET__GO_THRU 0x00000010UL #define KEY__VIEW 0x00000001UL #define KEY__READ 0x00000002UL --- linux-2.6.17.child_sock/security/selinux/include/av_perm_to_string.h 2006-07-31 09:36:24.000000000 -0500 +++ linux-2.6.17/security/selinux/include/av_perm_to_string.h 2006-07-31 10:20:16.000000000 -0500 @@ -245,6 +245,8 @@ S_(SECCLASS_PACKET, PACKET__SEND, "send") S_(SECCLASS_PACKET, PACKET__RECV, "recv") S_(SECCLASS_PACKET, PACKET__RELABELTO, "relabelto") + S_(SECCLASS_PACKET, PACKET__COME_THRU, "come_thru") + S_(SECCLASS_PACKET, PACKET__GO_THRU, "go_thru") S_(SECCLASS_KEY, KEY__VIEW, "view") S_(SECCLASS_KEY, KEY__READ, "read") S_(SECCLASS_KEY, KEY__WRITE, "write") - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
