From 954f7bf5ecce153de2c6d17da87543e406931006 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Mon, 28 Oct 2013 14:25:22 +0100
Subject: [PATCH] 	* grub-core/loader/xnu_resume.c (grub_xnu_resume):
 Reject empty images.

---
 ChangeLog                     | 4 ++++
 grub-core/loader/xnu_resume.c | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 510d3a032..4b69844d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-10-28  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/loader/xnu_resume.c (grub_xnu_resume): Reject empty images.
+
 2013-10-28  Francesco Lavra  <francescolavra.fl@gmail.com>
 
 	* grub-core/lib/fdt.c: Fix miscellaneous bugs.
diff --git a/grub-core/loader/xnu_resume.c b/grub-core/loader/xnu_resume.c
index e99ea142e..534a74438 100644
--- a/grub-core/loader/xnu_resume.c
+++ b/grub-core/loader/xnu_resume.c
@@ -83,6 +83,13 @@ grub_xnu_resume (char *imagename)
 			 "encrypted images aren't supported yet");
     }
 
+  if (hibhead.image_size == 0)
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_BAD_OS,
+			 "hibernate image is empty");
+    }
+
   codedest = hibhead.launchcode_target_page;
   codedest *= GRUB_XNU_PAGESIZE;
   codesize = hibhead.launchcode_numpages;