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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2013-04-25 06:53:54 +0000
committerDavid S. Miller <davem@davemloft.net>2013-04-29 13:21:30 -0400
commite8d9612c181b1a68ba5f71384629343466f1bd13 (patch)
tree16093300e9da78c1c3e272283ae4886d7b3984e8 /net/packet/diag.c
parent76d0eeb1a1579453cfd7c4da22004d4b34187ab4 (diff)
downloadlinux-e8d9612c181b1a68ba5f71384629343466f1bd13.tar.gz
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>
Diffstat (limited to 'net/packet/diag.c')
-rw-r--r--net/packet/diag.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/packet/diag.c b/net/packet/diag.c
index 822fe9b33a4..a9584a2f6d6 100644
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -170,6 +170,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
sock_diag_put_meminfo(sk, skb, PACKET_DIAG_MEMINFO))
goto out_nlmsg_trim;
+ if ((req->pdiag_show & PACKET_SHOW_FILTER) &&
+ sock_diag_put_filterinfo(user_ns, sk, skb, PACKET_DIAG_FILTER))
+ goto out_nlmsg_trim;
+
return nlmsg_end(skb, nlh);
out_nlmsg_trim: