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certs: fix and refactor CONFIG_SYSTEM_BLACKLIST_HASH_LIST build

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Commit addf466389 ("certs: Check that builtin blacklist hashes are
valid") was applied 8 months after the submission.

In the meantime, the base code had been removed by commit b8c96a6b46
("certs: simplify $(srctree)/ handling and remove config_filename
macro").

Fix the Makefile.

Create a local copy of $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST). It is
included from certs/blacklist_hashes.c and also works as a timestamp.

Send error messages from check-blacklist-hashes.awk to stderr instead
of stdout.

Fixes: addf466389 ("certs: Check that builtin blacklist hashes are valid")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Mickaël Salaün <mic@linux.microsoft.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Masahiro Yamada 2022-06-12 02:22:31 +09:00 committed by Jarkko Sakkinen
parent 6a1c3767d8
commit 27b5b22d25
3 changed files with 12 additions and 12 deletions
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2
certs/.gitignore vendored
View File

@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
/blacklist_hashes_checked
/blacklist_hash_list
/extract-cert
/x509_certificate_list
/x509_revocation_list

20
certs/Makefile
View File

@ -7,22 +7,22 @@ obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o c
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o
obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o
ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),)
quiet_cmd_check_blacklist_hashes = CHECK $(patsubst "%",%,$(2))
cmd_check_blacklist_hashes = $(AWK) -f $(srctree)/scripts/check-blacklist-hashes.awk $(2); touch $@
$(eval $(call config_filename,SYSTEM_BLACKLIST_HASH_LIST))
$(obj)/blacklist_hashes.o: $(obj)/blacklist_hash_list
CFLAGS_blacklist_hashes.o := -I $(obj)
$(obj)/blacklist_hashes.o: $(obj)/blacklist_hashes_checked
quiet_cmd_check_and_copy_blacklist_hash_list = GEN $@
cmd_check_and_copy_blacklist_hash_list = \
$(AWK) -f $(srctree)/scripts/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
cat $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) > $@
CFLAGS_blacklist_hashes.o += -I$(srctree)
targets += blacklist_hashes_checked
$(obj)/blacklist_hashes_checked: $(SYSTEM_BLACKLIST_HASH_LIST_SRCPREFIX)$(SYSTEM_BLACKLIST_HASH_LIST_FILENAME) scripts/check-blacklist-hashes.awk FORCE
$(call if_changed,check_blacklist_hashes,$(SYSTEM_BLACKLIST_HASH_LIST_SRCPREFIX)$(CONFIG_SYSTEM_BLACKLIST_HASH_LIST))
$(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) FORCE
$(call if_changed,check_and_copy_blacklist_hash_list)
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o
else
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o
endif
targets += blacklist_hash_list
quiet_cmd_extract_certs = CERT $@
cmd_extract_certs = $(obj)/extract-cert $(extract-cert-in) $@
@ -33,7 +33,7 @@ $(obj)/system_certificates.o: $(obj)/x509_certificate_list
$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(obj)/extract-cert FORCE
$(call if_changed,extract_certs)
targets += x509_certificate_list blacklist_hashes_checked
targets += x509_certificate_list
# 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

2
certs/blacklist_hashes.c
View File

@ -2,6 +2,6 @@
#include "blacklist.h"
const char __initconst *const blacklist_hashes[] = {
#include CONFIG_SYSTEM_BLACKLIST_HASH_LIST
#include "blacklist_hash_list"
, NULL
};