sock_diag: allow to dump bpf filters

This patch allows to dump BPF filters attached to a socket with
SO_ATTACH_FILTER.
Note that we check CAP_SYS_ADMIN before allowing to dump this info.

For now, only AF_PACKET sockets use this feature.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2013-04-25 06:53:54 +00:00 committed by David S. Miller
parent 76d0eeb1a1
commit e8d9612c18
4 changed files with 42 additions and 0 deletions

View file

@ -17,6 +17,7 @@ struct packet_diag_req {
#define PACKET_SHOW_RING_CFG 0x00000004 /* Rings configuration parameters */
#define PACKET_SHOW_FANOUT 0x00000008
#define PACKET_SHOW_MEMINFO 0x00000010
#define PACKET_SHOW_FILTER 0x00000020
struct packet_diag_msg {
__u8 pdiag_family;
@ -35,6 +36,7 @@ enum {
PACKET_DIAG_FANOUT,
PACKET_DIAG_UID,
PACKET_DIAG_MEMINFO,
PACKET_DIAG_FILTER,
__PACKET_DIAG_MAX,
};