1 files changed, 66 insertions, 0 deletions
diff --git a/src/lib/rpc/rpc_dtablesize.c b/src/lib/rpc/rpc_dtablesize.c
new file mode 100644
index 000000000000..7a43c1a4cfeb
--- /dev/null
+++ b/src/lib/rpc/rpc_dtablesize.c
@@ -0,0 +1,66 @@
+/* @(#)rpc_dtablesize.c	2.1 88/07/29 4.0 RPCSRC */
+/*
+ * Copyright (c) 2010, Oracle America, Inc.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *
+ *     * Neither the name of the "Oracle America, Inc." nor the names of
+ *       its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";
+#endif
+
+#include <unistd.h>
+#include <gssrpc/rpc.h>
+
+/*
+ * Cache the result of getdtablesize(), so we don't have to do an
+ * expensive system call every time.
+ */
+int
+gssrpc__rpc_dtablesize(void)
+{
+	static int size;
+
+	if (size == 0) {
+#ifdef _SC_OPEN_MAX
+	    size = (int) sysconf(_SC_OPEN_MAX);
+#else
+	    size = getdtablesize();
+#endif
+
+/* sysconf() can return a number larger than what will fit in an
+   fd_set.  we can't use fd's larger than this, anyway. */
+
+#ifdef FD_SETSIZE
+	    if (size >= FD_SETSIZE)
+		size = FD_SETSIZE-1;
+#endif
+	}
+	return (size);
+}