File 0001-xdrstdio_create-buffers-do-not-output-encoded-values.patch of Package libtirpc

From 145272c2b6d89a1c3a7de86a2cbef43880f1b61b Mon Sep 17 00:00:00 2001
From: Steve Dickson <steved@redhat.com>
Date: Wed, 11 Jul 2018 11:21:39 -0400
Subject: [PATCH] xdrstdio_create buffers do not output encoded values on ppc

References: bsc#1126096
Patch-mainline: libtirpc-1-0-4
Git-commit: 145272c2b6d89a1c3a7de86a2cbef43880f1b61b

The cause is that the xdr_putlong uses a long to store the
converted value, then passes it to fwrite as a byte buffer.
Only the first 4 bytes are written, which is okay for a LE
system after byteswapping, but writes all zeroes on BE systems.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1261738

Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 src/xdr_stdio.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/xdr_stdio.c b/src/xdr_stdio.c
index 4410262275b6..846c7bf2a9c7 100644
--- a/src/xdr_stdio.c
+++ b/src/xdr_stdio.c
@@ -38,6 +38,7 @@
  */
 
 #include <stdio.h>
+#include <stdint.h>
 
 #include <arpa/inet.h>
 #include <rpc/types.h>
@@ -103,10 +104,12 @@ xdrstdio_getlong(xdrs, lp)
 	XDR *xdrs;
 	long *lp;
 {
+	int32_t mycopy;
 
-	if (fread(lp, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
+	if (fread(&mycopy, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
 		return (FALSE);
-	*lp = (long)ntohl((u_int32_t)*lp);
+
+	*lp = (long)ntohl(mycopy);
 	return (TRUE);
 }
 
@@ -115,8 +118,14 @@ xdrstdio_putlong(xdrs, lp)
 	XDR *xdrs;
 	const long *lp;
 {
-	long mycopy = (long)htonl((u_int32_t)*lp);
+	int32_t mycopy;
+
+#if defined(_LP64)
+	if ((*lp > UINT32_MAX) || (*lp < INT32_MIN))
+		return (FALSE);
+#endif
 
+	mycopy = (int32_t)htonl((int32_t)*lp);
 	if (fwrite(&mycopy, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
 		return (FALSE);
 	return (TRUE);
-- 
2.20.1