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| author |   Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2013-04-25 06:53:54 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-04-29 13:21:30 -0400 |
| commit | e8d9612c181b1a68ba5f71384629343466f1bd13 (patch) | |
| tree | 16093300e9da78c1c3e272283ae4886d7b3984e8 /net/packet | |
| parent | packet_diag: disclose meminfo values (diff) | |
| download | linux-dev-e8d9612c181b1a68ba5f71384629343466f1bd13.tar.xz linux-dev-e8d9612c181b1a68ba5f71384629343466f1bd13.zip | |
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')
| -rw-r--r-- | net/packet/diag.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/packet/diag.c b/net/packet/diag.c index 822fe9b33a49..a9584a2f6d69 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: |