1 files changed, 85 insertions, 0 deletions
diff --git a/sunrpc/bindrsvprt6.c b/sunrpc/bindrsvprt6.c
new file mode 100644
index 0000000000..271c9d88a3
--- /dev/null
+++ b/sunrpc/bindrsvprt6.c
@@ -0,0 +1,85 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+/*
+ * Copyright (c) 1987 by Sun Microsystems, Inc.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+/*
+ * Bind a socket to a privileged IP port
+ */
+int
+bindresvport6 (int sd, struct sockaddr_in6 *sin)
+{
+  int res;
+  static short port;
+  struct sockaddr_in6 myaddr;
+  int i;
+
+#define STARTPORT 600
+#define ENDPORT (IPPORT_RESERVED - 1)
+#define NPORTS	(ENDPORT - STARTPORT + 1)
+
+  if (sin == (struct sockaddr_in6 *) 0)
+    {
+      sin = &myaddr;
+      __bzero (sin, sizeof (*sin));
+      sin->sin6_family = AF_INET6;
+    }
+  else if (sin->sin6_family != AF_INET6)
+    {
+      __set_errno (EPFNOSUPPORT);
+      return -1;
+    }
+
+  if (port == 0)
+    {
+      port = (__getpid () % NPORTS) + STARTPORT;
+    }
+  res = -1;
+  __set_errno (EADDRINUSE);
+
+  for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; ++i)
+    {
+      sin->sin6_port = htons (port++);
+      if (port > ENDPORT)
+	{
+	  port = STARTPORT;
+	}
+      res = bind (sd, sin, sizeof (struct sockaddr_in6));
+    }
+
+  return res;
+}