Import propolice (http://www.trl.ibm.com/projects/security/ssp), a stack

attack protection scheme, into gcc.

This protection is enabled by default. It can be turned off by using the
-fno-stack-protector flag.

Code by Hiroaki Etoh (etoh at jp dot ibm dot com); work on openbsd-specific
integration by fgsch@, deraadt@ and myself; tests by fgsch@, naddy@ and
myself; beer drinking by myself.

Please note that system upgrades with this new code will require a new
libc and ld.so to be build and installed before the propolice-enabled
compiler can be installed.

1 files changed, 13 insertions, 1 deletions

diff --git a/gnu/usr.bin/ld/rtld/rtld.c b/gnu/usr.bin/ld/rtld/rtld.c
index 0fb7e6184b8..f100fb1ae25 100644
--- a/gnu/usr.bin/ld/rtld/rtld.c
+++ b/gnu/usr.bin/ld/rtld/rtld.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rtld.c,v 1.29 2002/09/07 01:25:34 marc Exp $	*/
+/*	$OpenBSD: rtld.c,v 1.30 2002/12/02 09:00:11 miod Exp $	*/
 /*	$NetBSD: rtld.c,v 1.43 1996/01/14 00:35:17 pk Exp $	*/
 /*
  * Copyright (c) 1993 Paul Kranenburg
@@ -59,6 +59,18 @@
 
 #include "ld.h"
 
+/*
+ * Stack protector dummies.
+ * Ideally, a scheme to compile these stubs from libc should be used, but
+ * this would end up dragging too much code from libc here.
+ */
+long __guard[8] = {0,0,0,0,0,0,0,0};
+void
+__stack_smash_handler(char func[], int damaged)
+{
+	_exit(127);
+}
+
 #ifndef MAP_ANON
 #define MAP_ANON	0
 #define anon_open() do {					\