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certs: simplify $(srctree)/ handling and remove config_filename macro

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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>
This commit is contained in:
Masahiro Yamada
2021-12-14 11:53:51 +09:00
parent 4db9c2e3d0
commit b8c96a6b46
2 changed files with 13 additions and 66 deletions
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32
certs/Makefile
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@@ -15,15 +15,12 @@ endif
quiet_cmd_extract_certs = CERT $@
cmd_extract_certs = scripts/extract-cert $(2) $@
ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
$(eval $(call config_filename,SYSTEM_TRUSTED_KEYS))
$(obj)/system_certificates.o: $(obj)/x509_certificate_list
$(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(SYSTEM_TRUSTED_KEYS_FILENAME) FORCE
$(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))
endif # CONFIG_SYSTEM_TRUSTED_KEYRING
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
@@ -72,29 +69,26 @@ $(obj)/x509.genkey:
endif # CONFIG_MODULE_SIG_KEY
$(eval $(call config_filename,MODULE_SIG_KEY))
CONFIG_MODULE_SIG_KEY := $(CONFIG_MODULE_SIG_KEY:"%"=%)
# If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it
ifeq ($(patsubst pkcs11:%,%,$(firstword $(MODULE_SIG_KEY_FILENAME))),$(firstword $(MODULE_SIG_KEY_FILENAME)))
X509_DEP := $(MODULE_SIG_KEY_SRCPREFIX)$(MODULE_SIG_KEY_FILENAME)
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: scripts/extract-cert $(X509_DEP) FORCE
$(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
$(obj)/signing_key.x509: $(X509_DEP) scripts/extract-cert FORCE
$(call if_changed,extract_certs,$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY)))
endif # CONFIG_MODULE_SIG
targets += signing_key.x509
ifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y)
$(eval $(call config_filename,SYSTEM_REVOCATION_KEYS))
$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
$(obj)/x509_revocation_list: scripts/extract-cert $(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(SYSTEM_REVOCATION_KEYS_FILENAME) FORCE
$(call if_changed,extract_certs,$(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_REVOCATION_KEYS))
endif
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