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From 56713a28675b966e027a824a0130b80dffab209f Mon Sep 17 00:00:00 2001
From: Josh Boyer <jwboyer@redhat.com>
Date: Mon, 5 Nov 2012 09:09:24 +1030
Subject: [PATCH] MODSIGN: Add modules_sign make target
If CONFIG_MODULE_SIG is set, and 'make modules_sign' is called then this
patch will cause the modules to get a signature appended. The make target
is intended to be run after 'make modules_install', and will modify the
modules in-place in the installed location. It can be used to produce
signed modules after they have been processed by distribution build
scripts.
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (minor typo fix)
---
Makefile | 6 ++++++
scripts/Makefile.modsign | 32 ++++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+), 0 deletions(-)
create mode 100644 scripts/Makefile.modsign
diff --git a/Makefile b/Makefile
index 42d0e56..253aa1b 100644
--- a/Makefile
+++ b/Makefile
@@ -981,6 +981,12 @@ _modinst_post: _modinst_
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
$(call cmd,depmod)
+ifeq ($(CONFIG_MODULE_SIG), y)
+PHONY += modules_sign
+modules_sign:
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
+endif
+
else # CONFIG_MODULES
# Modules not configured
diff --git a/scripts/Makefile.modsign b/scripts/Makefile.modsign
new file mode 100644
index 0000000..abfda62
--- /dev/null
+++ b/scripts/Makefile.modsign
@@ -0,0 +1,32 @@
+# ==========================================================================
+# Signing modules
+# ==========================================================================
+
+PHONY := __modsign
+__modsign:
+
+include scripts/Kbuild.include
+
+__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
+modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
+
+PHONY += $(modules)
+__modsign: $(modules)
+ @:
+
+quiet_cmd_sign_ko = SIGN [M] $(2)/$(notdir $@)
+ cmd_sign_ko = $(mod_sign_cmd) $(2)/$(notdir $@)
+
+# Modules built outside the kernel source tree go into extra by default
+INSTALL_MOD_DIR ?= extra
+ext-mod-dir = $(INSTALL_MOD_DIR)$(subst $(patsubst %/,%,$(KBUILD_EXTMOD)),,$(@D))
+
+modinst_dir = $(if $(KBUILD_EXTMOD),$(ext-mod-dir),kernel/$(@D))
+
+$(modules):
+ $(call cmd,sign_ko,$(MODLIB)/$(modinst_dir))
+
+# Declare the contents of the .PHONY variable as phony. We keep that
+# information in a variable se we can use it in if_changed and friends.
+
+.PHONY: $(PHONY)
--
1.7.7.6
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