[Xen-changelog] [xen-unstable] minios: _chk_fail and _chk canaries for minios and newlib

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1238495771 -3600
# Node ID 6ad2b1ded12f886103fb71edde7dfbedf3c4c841
# Parent  b7a11dff84c06fdbb021b9719060b9cadba4d02c
minios: _chk_fail and _chk canaries for minios and newlib

Add __stack_chk_fail to mini-os and __sprintf_chk __fprintf_chk to
newlib, to cope with ocaml runtimes compiled with -fstack-protector.

From: "George S. Coker, II" <gscoker@xxxxxxxxxxxxxx>
Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
---
 extras/mini-os/lib/stack_chk_fail.c |    8 ++++++++
 stubdom/Makefile                    |    1 +
 2 files changed, 9 insertions(+)

diff -r b7a11dff84c0 -r 6ad2b1ded12f extras/mini-os/lib/stack_chk_fail.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/mini-os/lib/stack_chk_fail.c       Tue Mar 31 11:36:11 2009 +0100
@@ -0,0 +1,8 @@
+#include <kernel.h>
+#include <console.h>
+
+void __stack_chk_fail(void)
+{
+    printk("stack smashing detected\n");
+    do_exit();
+}
diff -r b7a11dff84c0 -r 6ad2b1ded12f stubdom/Makefile
--- a/stubdom/Makefile  Tue Mar 31 11:33:56 2009 +0100
+++ b/stubdom/Makefile  Tue Mar 31 11:36:11 2009 +0100
@@ -91,6 +91,7 @@ newlib-$(NEWLIB_VERSION): newlib-$(NEWLI
 newlib-$(NEWLIB_VERSION): newlib-$(NEWLIB_VERSION).tar.gz
        tar xzf $<
        patch -d $@ -p0 < newlib.patch
+       patch -d $@ -p0 < newlib-chk.patch
        touch $@
 
 NEWLIB_STAMPFILE=$(CROSS_ROOT)/$(GNU_TARGET_ARCH)-xen-elf/lib/libc.a

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