[PATCH] knfsd: define new nfsdfs file: portlist - contains list of ports

This file will list all ports that nfsd has open.
Default when TCP enabled will be
   ipv4 udp 0.0.0.0 2049
   ipv4 tcp 0.0.0.0 2049

Later, the list of ports will be settable.

'portlist' chosen rather than 'ports', to avoid unnecessary confusion with
non-mainline patches which created 'ports' with different semantics.

[akpm@osdl.org: cleanups, build fix]
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 5b0fe1b66a23..3ee4b78742b1 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -429,6 +429,46 @@ out:
 }
 
 /*
+ * Report socket names for nfsdfs
+ */
+static int one_sock_name(char *buf, struct svc_sock *svsk)
+{
+	int len;
+
+	switch(svsk->sk_sk->sk_family) {
+	case AF_INET:
+		len = sprintf(buf, "ipv4 %s %u.%u.%u.%u %d\n",
+			      svsk->sk_sk->sk_protocol==IPPROTO_UDP?
+			      "udp" : "tcp",
+			      NIPQUAD(inet_sk(svsk->sk_sk)->rcv_saddr),
+			      inet_sk(svsk->sk_sk)->num);
+		break;
+	default:
+		len = sprintf(buf, "*unknown-%d*\n",
+			       svsk->sk_sk->sk_family);
+	}
+	return len;
+}
+
+int
+svc_sock_names(char *buf, struct svc_serv *serv)
+{
+	struct svc_sock *svsk;
+	int len = 0;
+
+	if (!serv)
+		return 0;
+	spin_lock(&serv->sv_lock);
+	list_for_each_entry(svsk, &serv->sv_permsocks, sk_list) {
+		int onelen = one_sock_name(buf+len, svsk);
+		len += onelen;
+	}
+	spin_unlock(&serv->sv_lock);
+	return len;
+}
+EXPORT_SYMBOL(svc_sock_names);
+
+/*
  * Check input queue length
  */
 static int