1 files changed, 157 insertions, 0 deletions
diff --git a/sunrpc/xdr_sizeof.c b/sunrpc/xdr_sizeof.c
new file mode 100644
index 0000000000..72403e0a26
--- /dev/null
+++ b/sunrpc/xdr_sizeof.c
@@ -0,0 +1,157 @@
+/*
+ * 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
+ */
+/*
+ * xdr_sizeof.c
+ *
+ * Copyright 1990 Sun Microsystems, Inc.
+ *
+ * General purpose routine to see how much space something will use
+ * when serialized using XDR.
+ */
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+/* ARGSUSED */
+static bool_t
+x_putlong (XDR *xdrs, const long *longp)
+{
+  xdrs->x_handy += BYTES_PER_XDR_UNIT;
+  return TRUE;
+}
+
+/* ARGSUSED */
+static bool_t
+x_putbytes (XDR *xdrs, const char *bp, u_int len)
+{
+  xdrs->x_handy += len;
+  return TRUE;
+}
+
+static u_int
+x_getpostn (const XDR *xdrs)
+{
+  return xdrs->x_handy;
+}
+
+/* ARGSUSED */
+static bool_t
+x_setpostn (XDR *xdrs, u_int len)
+{
+  /* This is not allowed */
+  return FALSE;
+}
+
+static long *
+x_inline (XDR *xdrs, int len)
+{
+  if (len == 0)
+    {
+      return NULL;
+    }
+  if (xdrs->x_op != XDR_ENCODE)
+    {
+      return NULL;
+    }
+  if (len < (int) xdrs->x_base)
+    {
+      /* x_private was already allocated */
+      xdrs->x_handy += len;
+      return (long *) xdrs->x_private;
+    }
+  else
+    {
+      /* Free the earlier space and allocate new area */
+      if (xdrs->x_private)
+	free (xdrs->x_private);
+      if ((xdrs->x_private = (caddr_t) malloc (len)) == NULL)
+	{
+	  xdrs->x_base = 0;
+	  return NULL;
+	}
+      xdrs->x_base = (caddr_t) len;
+      xdrs->x_handy += len;
+      return (long *) xdrs->x_private;
+    }
+}
+
+static int
+harmless (void)
+{
+  /* Always return FALSE/NULL, as the case may be */
+  return 0;
+}
+
+static void
+x_destroy (XDR *xdrs)
+{
+  xdrs->x_handy = 0;
+  xdrs->x_base = 0;
+  if (xdrs->x_private)
+    {
+      free (xdrs->x_private);
+      xdrs->x_private = NULL;
+    }
+  return;
+}
+
+unsigned long
+xdr_sizeof (xdrproc_t func, void *data)
+{
+  XDR x;
+  struct xdr_ops ops;
+  bool_t stat;
+  /* to stop ANSI-C compiler from complaining */
+  typedef bool_t (*dummyfunc1) (XDR *, long *);
+  typedef bool_t (*dummyfunc2) (XDR *, caddr_t, u_int);
+
+  ops.x_putlong = x_putlong;
+  ops.x_putbytes = x_putbytes;
+  ops.x_inline = x_inline;
+  ops.x_getpostn = x_getpostn;
+  ops.x_setpostn = x_setpostn;
+  ops.x_destroy = x_destroy;
+
+  /* the other harmless ones */
+  ops.x_getlong = (dummyfunc1) harmless;
+  ops.x_getbytes = (dummyfunc2) harmless;
+
+  x.x_op = XDR_ENCODE;
+  x.x_ops = &ops;
+  x.x_handy = 0;
+  x.x_private = (caddr_t) NULL;
+  x.x_base = (caddr_t) 0;
+
+  stat = func (&x, data);
+  if (x.x_private)
+    free (x.x_private);
+  return stat == TRUE ? (unsigned) x.x_handy : 0;
+}