[PATCH] knfsd: register all RPC programs with portmapper by default

The NFSACL patches introduced support for multiple RPC services listening on the same transport. However, only the first of these services was registered with portmapper. This was perfectly fine for nfsacl, as you traditionally do not want these to show up in a portmapper listing. The patch below changes the default behavior to always register all services listening on a given transport, but retains the old behavior for nfsacl services. Signed-off-by: Olaf Kirch <[email protected]> Signed-off-by: Neil Brown <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Oct 4, 2006 · bc5fea4 · bc5fea4
1 parent 0ade060
commit bc5fea4
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Showing 4 changed files with 28 additions and 14 deletions.
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
@@ -333,4 +333,5 @@ struct svc_version	nfsd_acl_version2 = {
 		.vs_proc	= nfsd_acl_procedures2,
 		.vs_dispatch	= nfsd_dispatch,
 		.vs_xdrsize	= NFS3_SVC_XDRSIZE,
+		.vs_hidden	= 1,
 };
diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
@@ -263,5 +263,6 @@ struct svc_version	nfsd_acl_version3 = {
 		.vs_proc	= nfsd_acl_procedures3,
 		.vs_dispatch	= nfsd_dispatch,
 		.vs_xdrsize	= NFS3_SVC_XDRSIZE,
+		.vs_hidden	= 1,
 };
 
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
@@ -321,6 +321,9 @@ struct svc_version {
 	struct svc_procedure *	vs_proc;	/* per-procedure info */
 	u32			vs_xdrsize;	/* xdrsize needed for this version */
 
+	unsigned int		vs_hidden : 1;	/* Don't register with portmapper.
+						 * Only used for nfsacl so far. */
+
 	/* Override dispatch function (e.g. when caching replies).
 	 * A return value of 0 means drop the request. 
 	 * vs_dispatch == NULL means use default dispatcher.

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
@@ -644,23 +644,32 @@ svc_register(struct svc_serv *serv, int proto, unsigned short port)
 	unsigned long		flags;
 	int			i, error = 0, dummy;
 
-	progp = serv->sv_program;
-
-	dprintk("RPC: svc_register(%s, %s, %d)\n",
-		progp->pg_name, proto == IPPROTO_UDP? "udp" : "tcp", port);
-
 	if (!port)
 		clear_thread_flag(TIF_SIGPENDING);
 
-	for (i = 0; i < progp->pg_nvers; i++) {
-		if (progp->pg_vers[i] == NULL)
-			continue;
-		error = rpc_register(progp->pg_prog, i, proto, port, &dummy);
-		if (error < 0)
-			break;
-		if (port && !dummy) {
-			error = -EACCES;
-			break;
+	for (progp = serv->sv_program; progp; progp = progp->pg_next) {
+		for (i = 0; i < progp->pg_nvers; i++) {
+			if (progp->pg_vers[i] == NULL)
+				continue;
+
+			dprintk("RPC: svc_register(%s, %s, %d, %d)%s\n",
+					progp->pg_name,
+					proto == IPPROTO_UDP?  "udp" : "tcp",
+					port,
+					i,
+					progp->pg_vers[i]->vs_hidden?
+						" (but not telling portmap)" : "");
+
+			if (progp->pg_vers[i]->vs_hidden)
+				continue;
+
+			error = rpc_register(progp->pg_prog, i, proto, port, &dummy);
+			if (error < 0)
+				break;
+			if (port && !dummy) {
+				error = -EACCES;
+				break;
+			}
 		}
 	}