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SubjectRe: [PATCH v2] MODSIGN: Only sign modules if built in-tree
Date
Josh Boyer <jwboyer@redhat.com> writes:
> diff --git a/Makefile b/Makefile
> index 14c93b3..7e27d51 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -722,8 +722,14 @@ export mod_strip_cmd
> ifeq ($(CONFIG_MODULE_SIG),y)
> MODSECKEY = ./signing_key.priv
> MODPUBKEY = ./signing_key.x509
> +ifeq ($(KBUILD_EXTMOD),)
> +SIGNFAIL = false
> +else
> +# External builds might not have a signing key, don't break module_install.
> +SIGNFAIL = true
> +endif # KBUILD_EXTMOD
> export MODPUBKEY
> -mod_sign_cmd = perl $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY)
> +mod_sign_cmd = $(SIGNFAIL) || perl $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY)
> else
> mod_sign_cmd = true
> endif

Huh? 'true || perl' never runs perl due to short circuiting.

Let's do this instead. Tested here, please ack.

Thanks,
Rusty.

modules: don't break modules_install on external modules with no key.

The script still spits out an error ("Can't read private key") but we
don't break modules_install.

Reported-by: Bruno Wolff III <bruno@wolff.to>
Original-patch-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index dda4b2b..ecbb447 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -16,8 +16,9 @@ PHONY += $(modules)
__modinst: $(modules)
@:

+# Don't stop modules_install if we can't sign external modules.
quiet_cmd_modules_install = INSTALL $@
- cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) ; $(mod_sign_cmd) $(2)/$(notdir $@)
+ cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) ; $(mod_sign_cmd) $(2)/$(notdir $@) $(patsubst %,|| true,$(KBUILD_EXTMOD))

# Modules built outside the kernel source tree go into extra by default
INSTALL_MOD_DIR ?= extra

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