From ff81a52695821704a3eb33e8de8bb7fe55bccfe1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh@redhat.com>
Date: Mon, 4 Jul 2016 00:21:45 +0200
Subject: Make WriteToClient take a const void * like any decent IO write
 function.

 Enough with the casting.  Doesn't break API or even ABI, but does make
 a lot of silly casts superfluos.
---
 nx-X11/programs/Xserver/include/os.h | 4 ++--
 nx-X11/programs/Xserver/os/io.c      | 8 +++++---
 nx-X11/programs/Xserver/os/osdep.h   | 2 +-
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/nx-X11/programs/Xserver/include/os.h b/nx-X11/programs/Xserver/include/os.h
index 6e629c42f..26ce2706c 100644
--- a/nx-X11/programs/Xserver/include/os.h
+++ b/nx-X11/programs/Xserver/include/os.h
@@ -124,7 +124,7 @@ extern void FlushIfCriticalOutputPending(void);
 
 extern void SetCriticalOutputPending(void);
 
-extern int WriteToClient(ClientPtr /*who*/, int /*count*/, char* /*buf*/);
+extern int WriteToClient(ClientPtr /*who*/, int /*count*/, const void* /*__buf*/);
 
 extern void ResetOsBuffers(void);
 
@@ -444,7 +444,7 @@ typedef struct {
 extern CallbackListPtr ReplyCallback;
 typedef struct {
     ClientPtr client;
-    void * replyData;
+    const void * replyData;
     unsigned long dataLenBytes;
     unsigned long bytesRemaining;
     Bool startOfReply;
diff --git a/nx-X11/programs/Xserver/os/io.c b/nx-X11/programs/Xserver/os/io.c
index 4d12c6e89..470d1bec2 100644
--- a/nx-X11/programs/Xserver/os/io.c
+++ b/nx-X11/programs/Xserver/os/io.c
@@ -857,11 +857,12 @@ SetCriticalOutputPending(void)
  *****************/
 
 int
-WriteToClient (ClientPtr who, int count, char *buf)
+WriteToClient (ClientPtr who, int count, const void *__buf)
 {
     OsCommPtr oc;
     ConnectionOutputPtr oco;
     int padBytes;
+    const char *buf = __buf;
 #ifdef DEBUG_COMMUNICATION
     Bool multicount = FALSE;
 #endif
@@ -999,13 +1000,14 @@ WriteToClient (ClientPtr who, int count, char *buf)
  **********************/
 
 int
-FlushClient(ClientPtr who, OsCommPtr oc, char *extraBuf, int extraCount)
+FlushClient(ClientPtr who, OsCommPtr oc, const void *__extraBuf, int extraCount)
 {
     ConnectionOutputPtr oco = oc->output;
     int connection = oc->fd;
     XtransConnInfo trans_conn = oc->trans_conn;
     struct iovec iov[3];
     static char padBuffer[3];
+    const char *extraBuf = __extraBuf;
     long written;
     long padsize;
     long notWritten;
@@ -1051,7 +1053,7 @@ FlushClient(ClientPtr who, OsCommPtr oc, char *extraBuf, int extraCount)
 	}
 
 	InsertIOV ((char *)oco->buf, oco->count)
-	InsertIOV (extraBuf, extraCount)
+	InsertIOV ((char *)extraBuf, extraCount)
 	InsertIOV (padBuffer, padsize)
 
 	errno = 0;
diff --git a/nx-X11/programs/Xserver/os/osdep.h b/nx-X11/programs/Xserver/os/osdep.h
index 633039f4a..a13af57d5 100644
--- a/nx-X11/programs/Xserver/os/osdep.h
+++ b/nx-X11/programs/Xserver/os/osdep.h
@@ -187,7 +187,7 @@ typedef struct _osComm {
 extern int FlushClient(
     ClientPtr /*who*/,
     OsCommPtr /*oc*/,
-    char* /*extraBuf*/,
+    const void * /*__extraBuf*/,
     int /*extraCount*/
 );
 
-- 
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