From 98fbca98dbd3b480adda35a055eec0c9634943eb Mon Sep 17 00:00:00 2001
From: Jay Sorg <jay.sorg@gmail.com>
Date: Thu, 3 Jul 2014 00:02:06 -0700
Subject: [PATCH] xup: check for g_shmat failure and change error case

---
 xup/xup.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/xup/xup.c b/xup/xup.c
index f1ddf4c2..5429e5f3 100644
--- a/xup/xup.c
+++ b/xup/xup.c
@@ -1125,6 +1125,12 @@ process_server_paint_rect_shmem(struct mod *mod, struct stream *s)
         {
             mod->screen_shmem_id = shmem_id;
             mod->screen_shmem_pixels = g_shmat(mod->screen_shmem_id);
+            if (mod->screen_shmem_pixels == (void*)-1)
+            {
+                /* failed */
+                mod->screen_shmem_id = 0;
+                mod->screen_shmem_pixels = 0;
+            }
         }
         if (mod->screen_shmem_pixels != 0)
         {
@@ -1137,10 +1143,6 @@ process_server_paint_rect_shmem(struct mod *mod, struct stream *s)
                                     bmpdata, width, height,
                                     srcx, srcy);
     }
-    else
-    {
-        rv = 1;
-    }
     send_paint_rect_ack(mod, flags, x, y, cx, cy, frame_id);
     return rv;
 }