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Resolves: rhbz#767708 avoid SIGBUS writing to overcommitted mmaped diskspace

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This commit is contained in:
Stephan Bergmann 2011-12-15 11:57:08 +01:00
parent a4312af08c
commit d11f2ccdce
1 changed files with 8 additions and 2 deletions
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10
bridges/source/cpp_uno/shared/vtablefactory.cxx
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@ -40,6 +40,7 @@
#include "osl/mutex.hxx" #include "osl/mutex.hxx"
#include "rtl/alloc.h" #include "rtl/alloc.h"
#include "rtl/ustring.hxx" #include "rtl/ustring.hxx"
#include "sal/log.hxx"
#include "sal/types.h" #include "sal/types.h"
#include "typelib/typedescription.hxx" #include "typelib/typedescription.hxx"
@ -65,6 +66,10 @@
#error Unsupported platform #error Unsupported platform
#endif #endif
#if defined USE_DOUBLE_MMAP
#include <fcntl.h>
#endif
using bridges::cpp_uno::shared::VtableFactory; using bridges::cpp_uno::shared::VtableFactory;
namespace { namespace {
@ -259,9 +264,10 @@ bool VtableFactory::createBlock(Block &block, sal_Int32 slotCount) const
} }
unlink(tmpfname); unlink(tmpfname);
delete[] 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"); SAL_WARN("bridges", "posix_fallocate failed with code " << err);
close(block.fd); close(block.fd);
block.fd = -1; block.fd = -1;
break; break;