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[Qemu-devel] [PULL 06/10] Enforce stack protector usage
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 06/10] Enforce stack protector usage |
Date: |
Wed, 9 Jul 2014 17:59:33 +0200 |
From: Miroslav Rezanina <address@hidden>
If --enable-stack-protector is used is used, configure script try to use
--fstack-protector-strong. In case it's not supported, --fstack-protector-all
is enabled. If both protectors are not supported, configure does not use
any protector at all without any notification.
This patch reports error when user requests stack protector to be used and
both protector modes are not supported. Behavior is not changed in case
user do not use any of --enable-stack-protector/--disable-stack-protector.
Signed-off-by: Miroslav Rezanina <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
configure | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/configure b/configure
index 7dd43fd..b880954 100755
--- a/configure
+++ b/configure
@@ -1491,6 +1491,7 @@ done
if test "$stack_protector" != "no" ; then
gcc_flags="-fstack-protector-strong -fstack-protector-all"
+ sp_on=0
for flag in $gcc_flags; do
# We need to check both a compile and a link, since some compiler
# setups fail only on a .c->.o compile and some only at link time
@@ -1498,9 +1499,15 @@ if test "$stack_protector" != "no" ; then
compile_prog "-Werror $flag" ""; then
QEMU_CFLAGS="$QEMU_CFLAGS $flag"
LIBTOOLFLAGS="$LIBTOOLFLAGS -Wc,$flag"
+ sp_on=1
break
fi
done
+ if test "$stack_protector" == "yes" ; then
+ if test "$sp_on" == "0" ; then
+ error_exit "Stack protector not supported"
+ fi
+ fi
fi
# Workaround for http://gcc.gnu.org/PR55489. Happens with -fPIE/-fPIC and
--
1.8.3.1
- [Qemu-devel] [PULL for-2.1 00/10] KVM changes (+ misc small fixes) for 2.1, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 01/10] mips/kvm: Init EBase to correct KSEG0, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 03/10] mips_malta: Remove incorrect KVM T&E references, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 02/10] mips_malta: Change default KVM cpu to 24Kc (no FP), Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 04/10] mips_malta: Catch kernels linked at wrong address, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 06/10] Enforce stack protector usage,
Paolo Bonzini <=
- Re: [Qemu-devel] [PULL for-2.1 00/10] KVM changes (+ misc small fixes) for 2.1, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 10/10] qtest: fix vhost-user-test compilation with old GLib, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 09/10] mc146818rtc: register the clock reset notifier on the right clock, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 05/10] watchdog: fix deadlock with -watchdog-action pause, Paolo Bonzini, 2014/07/09
- [Qemu-devel] [PULL 08/10] oslib-posix: Fix new compiler error with -Wclobbered, Paolo Bonzini, 2014/07/10
- [Qemu-devel] [PULL 07/10] target-i386: Add "kvmclock-stable-bit" feature bit name, Paolo Bonzini, 2014/07/10