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MODSIGN: Add modules_sign make target

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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)
This commit is contained in:
Josh Boyer 2012-11-05 09:09:24 +10:30 committed by Rusty Russell
parent 71eac70257
commit d890f510c8
2 changed files with 38 additions and 0 deletions
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6
Makefile
View file

@ -981,6 +981,12 @@ _modinst_post: _modinst_
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
$(call cmd,depmod) $(call cmd,depmod)
ifeq ($(CONFIG_MODULE_SIG), y)
PHONY += modules_sign
modules_sign:
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
endif
else # CONFIG_MODULES else # CONFIG_MODULES
# Modules not configured # Modules not configured

32
scripts/Makefile.modsign Normal file
View file

@ -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)