From: Don Slutz <dslutz@verizon.com>
Date: Mon, 28 Jul 2014 16:06:01 +0000 (-0400)
Subject: libxl_internal.c: Fix return handling for case of mmap failure
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~4579
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=8a14ca08f2aa5e52ffd8b42792ae1f3a708339ee;p=xen.git

libxl_internal.c: Fix return handling for case of mmap failure

mmap() returns MAP_FAILED not NULL.

Signed-off-by: Don Slutz <dslutz@verizon.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index 81f898567e..b880c898b5 100644
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -246,7 +246,7 @@ int libxl__file_reference_map(libxl__file_reference *f)
 
     ret = -1;
     data = mmap(NULL, st_buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-    if (data == NULL)
+    if (data == MAP_FAILED)
         goto out;
 
     f->mapped = 1;