kbuild: sign the modules at install time

Linus deleted the old code and put signing on the install command,
I fixed it to extract the keyid and signer-name within sign-file
and cleaned up that script now it always signs in-place.

Some enthusiast should convert sign-key to perl and pull
x509keyid into it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 366d0ab0c5fe..4fd82f7fc0bc 100644
--- a/Makefile
+++ b/Makefile
@@ -719,6 +719,17 @@ endif # INSTALL_MOD_STRIP
 export mod_strip_cmd
 
 
+ifeq ($(CONFIG_MODULE_SIG),y)
+MODSECKEY = ./signing_key.priv
+MODPUBKEY = ./signing_key.x509
+export MODPUBKEY
+mod_sign_cmd = sh $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY) $(srctree)/scripts/x509keyid
+else
+mod_sign_cmd = true
+endif
+export mod_sign_cmd
+
+
 ifeq ($(KBUILD_EXTMOD),)
 core-y          += kernel/ mm/ fs/ ipc/ security/ crypto/ block/