On 04/03/2013 05:41 AM, Daniel P. Berrange wrote:
From: "Daniel P. Berrange" <berrange@redhat.com>
By passing the flags -z relro -z now to the linker, we can force it to resolve all library symbols at startup, instead of on-demand. This allows it to then make the global offset table (GOT) read-only, which makes some security attacks harder.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com> --- configure.ac | 1 + daemon/Makefile.am | 1 + m4/virt-linker-relro.m4 | 15 +++++++++++++++ src/Makefile.am | 43 +++++++++++++++++++++++++++++++------------ tools/Makefile.am | 2 ++ 5 files changed, 50 insertions(+), 12 deletions(-) create mode 100644 m4/virt-linker-relro.m4
+++ b/m4/virt-linker-relro.m4 @@ -0,0 +1,15 @@ +dnl +dnl Check for -z now and -z relro linker flags
Same comment about copyright blurb. ACK. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org