A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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sock_diag: allow to dump bpf filters

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nicolas Dichtel 2013-04-25 06:53:54 +00:00 • committed by David S. Miller
commit e8d9612c18
4 changed files with 42 additions and 0 deletions
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4
net/packet/diag.c
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@ -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: