diff options
Diffstat (limited to 'meta/conf/distro/include/security_flags.inc')
| -rw-r--r-- | meta/conf/distro/include/security_flags.inc | 96 |
1 files changed, 47 insertions, 49 deletions
diff --git a/meta/conf/distro/include/security_flags.inc b/meta/conf/distro/include/security_flags.inc index ab2062b78f..d97a6edb0f 100644 --- a/meta/conf/distro/include/security_flags.inc +++ b/meta/conf/distro/include/security_flags.inc @@ -1,15 +1,18 @@ # Setup extra CFLAGS and LDFLAGS which have 'security' benefits. These # don't work universally, there are recipes which can't use one, the other -# or both so a blacklist is maintained here. The idea would be over +# or both so an override is maintained here. The idea would be over # time to reduce this list to nothing. # From a Yocto Project perspective, this file is included and tested -# in the DISTRO="poky-lsb" configuration. +# in the DISTRO="poky" configuration. GCCPIE ?= "--enable-default-pie" +# If static PIE is known to work well, GLIBCPIE="--enable-static-pie" can be set # _FORTIFY_SOURCE requires -O1 or higher, so disable in debug builds as they use # -O0 which then results in a compiler warning. -lcl_maybe_fortify = "${@base_conditional('DEBUG_BUILD','1','','-D_FORTIFY_SOURCE=2',d)}" +OPTLEVEL = "${@bb.utils.filter('SELECTED_OPTIMIZATION', '-O0 -O1 -O2 -O3 -Ofast -Og -Os -Oz -O', d)}" + +lcl_maybe_fortify ?= "${@oe.utils.conditional('OPTLEVEL','-O0','','${OPTLEVEL} -D_FORTIFY_SOURCE=2',d)}" # Error on use of format strings that represent possible security problems SECURITY_STRINGFORMAT ?= "-Wformat -Wformat-security -Werror=format-security" @@ -20,54 +23,49 @@ SECURITY_PIE_CFLAGS ?= "${@'' if '${GCCPIE}' else '-pie -fPIE'}" SECURITY_NOPIE_CFLAGS ?= "-no-pie -fno-PIE" -SECURITY_CFLAGS ?= "-fstack-protector-strong ${SECURITY_PIE_CFLAGS} ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}" -SECURITY_NO_PIE_CFLAGS ?= "-fstack-protector-strong ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}" +SECURITY_STACK_PROTECTOR ?= "-fstack-protector-strong" + +SECURITY_CFLAGS ?= "${SECURITY_STACK_PROTECTOR} ${SECURITY_PIE_CFLAGS} ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}" +SECURITY_NO_PIE_CFLAGS ?= "${SECURITY_STACK_PROTECTOR} ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}" -SECURITY_LDFLAGS ?= "-fstack-protector-strong -Wl,-z,relro,-z,now" -SECURITY_X_LDFLAGS ?= "-fstack-protector-strong -Wl,-z,relro" +SECURITY_LDFLAGS ?= "-Wl,-z,relro,-z,now" +SECURITY_X_LDFLAGS ?= "-Wl,-z,relro" # powerpc does not get on with pie for reasons not looked into as yet -SECURITY_CFLAGS_powerpc = "-fstack-protector-strong ${lcl_maybe_fortify} ${SECURITY_NOPIE_CFLAGS}" -SECURITY_CFLAGS_pn-libgcc_powerpc = "" -GCCPIE_powerpc = "" - -# arm specific security flag issues -SECURITY_CFLAGS_pn-glibc = "" -SECURITY_CFLAGS_pn-glibc-initial = "" -SECURITY_CFLAGS_pn-gcc-runtime = "" -SECURITY_CFLAGS_pn-grub = "" -SECURITY_CFLAGS_pn-grub-efi = "" -SECURITY_CFLAGS_pn-grub-efi-native = "" -SECURITY_CFLAGS_pn-grub-efi-x86-native = "" -SECURITY_CFLAGS_pn-grub-efi-i586-native = "" -SECURITY_CFLAGS_pn-grub-efi-x86-64-native = "" - -SECURITY_CFLAGS_pn-mkelfimage_x86 = "" - -SECURITY_CFLAGS_pn-valgrind = "${SECURITY_NOPIE_CFLAGS}" -SECURITY_LDFLAGS_pn-valgrind = "" -SECURITY_CFLAGS_pn-sysklogd = "${SECURITY_NOPIE_CFLAGS}" -SECURITY_LDFLAGS_pn-sysklogd = "" +GCCPIE:powerpc = "" +GLIBCPIE:powerpc = "" +SECURITY_CFLAGS:remove:powerpc = "${SECURITY_PIE_CFLAGS}" +SECURITY_CFLAGS:pn-libgcc:powerpc = "" + +SECURITY_CFLAGS:pn-glibc = "" +SECURITY_CFLAGS:pn-glibc-testsuite = "" +SECURITY_CFLAGS:pn-gcc-runtime = "" +SECURITY_CFLAGS:pn-grub = "" +SECURITY_CFLAGS:pn-grub-efi = "" +SECURITY_CFLAGS:pn-mkelfimage:x86 = "" + +SECURITY_CFLAGS:pn-valgrind = "${SECURITY_NOPIE_CFLAGS}" +SECURITY_LDFLAGS:pn-valgrind = "" +SECURITY_CFLAGS:pn-sysklogd = "${SECURITY_NOPIE_CFLAGS}" +SECURITY_LDFLAGS:pn-sysklogd = "" # Recipes which fail to compile when elevating -Wformat-security to an error -SECURITY_STRINGFORMAT_pn-busybox = "" -SECURITY_STRINGFORMAT_pn-gcc = "" - -TARGET_CC_ARCH_append_class-target = " ${SECURITY_CFLAGS}" -TARGET_LDFLAGS_append_class-target = " ${SECURITY_LDFLAGS}" - -SECURITY_LDFLAGS_remove_pn-gcc-runtime = "-fstack-protector-strong" -SECURITY_LDFLAGS_remove_pn-glibc = "-fstack-protector-strong" -SECURITY_LDFLAGS_remove_pn-glibc-initial = "-fstack-protector-strong" -SECURITY_LDFLAGS_pn-xf86-video-fbdev = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xf86-video-intel = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xf86-video-omapfb = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xf86-video-omap = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xf86-video-vesa = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xf86-video-vmware = "${SECURITY_X_LDFLAGS}" -SECURITY_LDFLAGS_pn-xserver-xorg = "${SECURITY_X_LDFLAGS}" - -TARGET_CC_ARCH_append_pn-binutils = " ${SELECTED_OPTIMIZATION}" -TARGET_CC_ARCH_append_pn-gcc = " ${SELECTED_OPTIMIZATION}" -TARGET_CC_ARCH_append_pn-gdb = " ${SELECTED_OPTIMIZATION}" -TARGET_CC_ARCH_append_pn-perf = " ${SELECTED_OPTIMIZATION}" +SECURITY_STRINGFORMAT:pn-busybox = "" +SECURITY_STRINGFORMAT:pn-gcc = "" + +TARGET_CC_ARCH:append:class-target = " ${SECURITY_CFLAGS}" +TARGET_LDFLAGS:append:class-target = " ${SECURITY_LDFLAGS}" +TARGET_CC_ARCH:append:class-cross-canadian = " ${SECURITY_CFLAGS}" +TARGET_LDFLAGS:append:class-cross-canadian = " ${SECURITY_LDFLAGS}" + +SECURITY_STACK_PROTECTOR:pn-gcc-runtime = "" +SECURITY_STACK_PROTECTOR:pn-glibc = "" +SECURITY_STACK_PROTECTOR:pn-glibc-testsuite = "" +SECURITY_STACK_PROTECTOR:pn-ltp = "" +# All xorg module drivers need to be linked this way as well and are +# handled in recipes-graphics/xorg-driver/xorg-driver-common.inc +SECURITY_LDFLAGS:pn-xserver-xorg = "${SECURITY_X_LDFLAGS}" + +TARGET_CC_ARCH:append:pn-binutils = " ${SELECTED_OPTIMIZATION}" +TARGET_CC_ARCH:append:pn-gcc = " ${SELECTED_OPTIMIZATION}" +TARGET_CC_ARCH:append:pn-gdb = " ${SELECTED_OPTIMIZATION}" |