netlink: Adding inode field to /proc/net/netlink

The Inode field in /proc/net/{tcp,udp,packet,raw,...} is useful to know the types of
file descriptors associated to a process. Actually lsof utility uses the field.
Unfortunately, unlike /proc/net/{tcp,udp,packet,raw,...}, /proc/net/netlink doesn't have the field.
This patch adds the field to /proc/net/netlink.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 4c5972ba8c78c00bb35519cae8e927ae84e8a1d0..320d0423a24062fd58aaf6340b021f7be587f581 100644 (file)
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1978,12 +1978,12 @@ static int netlink_seq_show(struct seq_file *seq, void *v)
        if (v == SEQ_START_TOKEN)
                seq_puts(seq,
                         "sk       Eth Pid    Groups   "
-                        "Rmem     Wmem     Dump     Locks     Drops\n");
+                        "Rmem     Wmem     Dump     Locks     Drops     Inode\n");
        else {
                struct sock *s = v;
                struct netlink_sock *nlk = nlk_sk(s);
 
-               seq_printf(seq, "%p %-3d %-6d %08x %-8d %-8d %p %-8d %-8d\n",
+               seq_printf(seq, "%p %-3d %-6d %08x %-8d %-8d %p %-8d %-8d %-8lu\n",
                           s,
                           s->sk_protocol,
                           nlk->pid,
@@ -1992,7 +1992,8 @@ static int netlink_seq_show(struct seq_file *seq, void *v)
                           sk_wmem_alloc_get(s),
                           nlk->cb,
                           atomic_read(&s->sk_refcnt),
-                          atomic_read(&s->sk_drops)
+                          atomic_read(&s->sk_drops),
+                          sock_i_ino(s)
                        );
 
        }