1 files changed, 79 insertions, 6 deletions

diff --git a/sunrpc/rpc_thread.c b/sunrpc/rpc_thread.c
index 0b004c403f..1fd1c143ea 100644
--- a/sunrpc/rpc_thread.c
+++ b/sunrpc/rpc_thread.c
@@ -14,6 +14,10 @@ static struct rpc_thread_variables __libc_tsd_RPC_VARS_mem;
 static struct rpc_thread_variables *__libc_tsd_RPC_VARS_data =
      &__libc_tsd_RPC_VARS_mem;
 
+
+/* This is the variable used for the first thread.  */
+static struct rpc_thread_variables rpc_default;
+
 /*
  * Task-variable destructor
  */
@@ -22,7 +26,7 @@ __rpc_thread_destroy (void)
 {
 	struct rpc_thread_variables *tvp = __rpc_thread_variables();
 
-	if (tvp != NULL) {
+	if (tvp != NULL && tvp != &rpc_default) {
 		__rpc_thread_svc_cleanup ();
 		__rpc_thread_clnt_cleanup ();
 		__rpc_thread_key_cleanup ();
@@ -37,19 +41,88 @@ __rpc_thread_destroy (void)
 }
 
 
+/*
+ * Initialize RPC multi-threaded operation
+ */
+static void
+rpc_thread_multi (void)
+{
+  __libc_tsd_set (RPC_VARS, &rpc_default);
+}
+
+
 struct rpc_thread_variables *
 __rpc_thread_variables (void)
 {
+	__libc_once_define (static, once);
 	struct rpc_thread_variables *tvp;
 
 	tvp = __libc_tsd_get (RPC_VARS);
 	if (tvp == NULL) {
-		tvp = calloc (1, sizeof *tvp);
-		if (tvp != NULL)
-			__libc_tsd_set (RPC_VARS, tvp);
-		else
-			tvp = __libc_tsd_RPC_VARS_data;
+		__libc_once (once, rpc_thread_multi);
+		tvp = __libc_tsd_get (RPC_VARS);
+		if (tvp == NULL) {
+			tvp = calloc (1, sizeof *tvp);
+			if (tvp != NULL)
+				__libc_tsd_set (RPC_VARS, tvp);
+			else
+				tvp = __libc_tsd_RPC_VARS_data;
+		}
 	}
 	return tvp;
 }
+
+
+/* Global variables If we're single-threaded, or if this is the first
+   thread using the variable, use the existing global variable.  This
+   provides backwards compatability for existing applications which
+   dynamically link against this code.  */
+#undef svc_fdset
+#undef rpc_createerr
+#undef svc_pollfd
+#undef svc_max_pollfd
+
+fd_set *
+__rpc_thread_svc_fdset (void)
+{
+	struct rpc_thread_variables *tvp;
+
+	tvp = __rpc_thread_variables ();
+	if (tvp == &rpc_default)
+		return &svc_fdset;
+	return &tvp->svc_fdset_s;
+}
+
+struct rpc_createerr *
+__rpc_thread_createerr (void)
+{
+	struct rpc_thread_variables *tvp;
+
+	tvp = __rpc_thread_variables ();
+	if (tvp == &rpc_default)
+		return &rpc_createerr;
+	return &tvp->rpc_createerr_s;
+}
+
+struct pollfd **
+__rpc_thread_svc_pollfd (void)
+{
+	struct rpc_thread_variables *tvp;
+
+	tvp = __rpc_thread_variables ();
+	if (tvp == &rpc_default)
+		return &svc_pollfd;
+	return &tvp->svc_pollfd_s;
+}
+
+int *
+__rpc_thread_svc_max_pollfd (void)
+{
+	struct rpc_thread_variables *tvp;
+
+	tvp = __rpc_thread_variables ();
+	if (tvp == &rpc_default)
+		return &svc_max_pollfd;
+	return &tvp->svc_max_pollfd_s;
+}
 #endif /* _RPC_THREAD_SAFE_ */