From d11f2ccdcecca78bc654ca0b787ea112c1dfe10c Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Thu, 15 Dec 2011 11:57:08 +0100
Subject: [PATCH] Resolves: rhbz#767708 avoid SIGBUS writing to overcommitted
 mmaped diskspace

---
 bridges/source/cpp_uno/shared/vtablefactory.cxx |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/bridges/source/cpp_uno/shared/vtablefactory.cxx b/bridges/source/cpp_uno/shared/vtablefactory.cxx
index 2703ac0..b049c7f 100644
--- a/bridges/source/cpp_uno/shared/vtablefactory.cxx
+++ b/bridges/source/cpp_uno/shared/vtablefactory.cxx
@@ -65,6 +66,10 @@
 #error Unsupported platform
 #endif
 
+#if defined USE_DOUBLE_MMAP
+#include <fcntl.h>
+#endif
+
 using bridges::cpp_uno::shared::VtableFactory;
 
 namespace {
@@ -259,9 +264,10 @@ bool VtableFactory::createBlock(Block &block, sal_Int32 slotCount) const
         }
         unlink(tmpfname);
         delete[] tmpfname;
-        if (ftruncate(block.fd, block.size) == -1)
+        int err = posix_fallocate(block.fd, 0, block.size);
+        if (err != 0)
         {
-            perror("truncation of executable memory area failed");
+            fprintf(stderr, "posix_fallocate failed with code %d\n", err);
             close(block.fd);
             block.fd = -1;
             break;
-- 
1.7.7.4