b8c96a6b46
The complex macro, config_filename, was introduced to do: [1] drop double-quotes from the string value [2] add $(srctree)/ prefix in case the file is not found in $(objtree) [3] escape spaces and more [1] will be more generally handled by Kconfig later. As for [2], Kbuild uses VPATH to search for files in $(objtree), $(srctree) in this order. GNU Make can natively handle it. As for [3], converting $(space) to $(space_escape) back and forth looks questionable to me. It is well-known that GNU Make cannot handle file paths with spaces in the first place. Instead of using the complex macro, use $< so it will be expanded to the file path of the key. Remove config_filename, finally. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3.2 KiB
SPDX-License-Identifier: GPL-2.0
Makefile for the linux kernel signature checking certificates.
obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"") obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o else obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o endif
quiet_cmd_extract_certs = CERT $@ cmd_extract_certs = scripts/extract-cert $(2) $@
$(obj)/system_certificates.o: $(obj)/x509_certificate_list
CONFIG_SYSTEM_TRUSTED_KEYS := $(CONFIG_SYSTEM_TRUSTED_KEYS:"%"=%)
$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,""))
targets += x509_certificate_list
ifeq ($(CONFIG_MODULE_SIG),y) SIGN_KEY = y endif
ifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y) ifeq ($(CONFIG_MODULES),y) SIGN_KEY = y endif endif
ifdef SIGN_KEY ###############################################################################
If module signing is requested, say by allyesconfig, but a key has not been
supplied, then one will need to be generated to make sure the build does not
fail and that the kernel may be used afterwards.
###############################################################################
We do it this way rather than having a boolean option for enabling an
external private key, because 'make randconfig' might enable such a
boolean option and we unfortunately can't make it depend on !RANDCONFIG.
ifeq ($(CONFIG_MODULE_SIG_KEY),"certs/signing_key.pem")
keytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1
quiet_cmd_gen_key = GENKEY $@
cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500
-batch -x509 -config $<
-outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1
$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE $(call if_changed,gen_key)
targets += signing_key.pem
quiet_cmd_copy_x509_config = COPY $@ cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@
You can provide your own config file. If not present, copy the default one.
$(obj)/x509.genkey: $(call cmd,copy_x509_config)
endif # CONFIG_MODULE_SIG_KEY
CONFIG_MODULE_SIG_KEY := $(CONFIG_MODULE_SIG_KEY:"%"=%)
If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it
ifneq ($(filter-out pkcs11:%, %(CONFIG_MODULE_SIG_KEY)),) X509_DEP := $(CONFIG_MODULE_SIG_KEY) endif
$(obj)/system_certificates.o: $(obj)/signing_key.x509
$(obj)/signing_key.x509: $(X509_DEP) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY))) endif # CONFIG_MODULE_SIG
targets += signing_key.x509
$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
CONFIG_SYSTEM_REVOCATION_KEYS := $(CONFIG_SYSTEM_REVOCATION_KEYS:"%"=%)
$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,""))
targets += x509_revocation_list