linux-kernel - [PATCH v2 3/3] dm: verity-loadpin: Use CONFIG_SECURITY_LOADPIN

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Message-Id: <20220426143059.v2.3.I5aca2dcc3b06de4bf53696cd21329dce8272b8aa@changeid>
Date:   Tue, 26 Apr 2022 14:31:10 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        James Morris <jmorris@...ei.org>,
        "Serge E . Hallyn" <serge@...lyn.com>
Cc:     linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, dm-devel@...hat.com,
        linux-raid@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Song Liu <song@...nel.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH v2 3/3] dm: verity-loadpin: Use CONFIG_SECURITY_LOADPIN_VERITY for conditional compilation

The verity glue for LoadPin is only needed when CONFIG_SECURITY_LOADPIN_VERITY
is set, use this option for conditional compilation instead of the combo of
CONFIG_DM_VERITY and CONFIG_SECURITY_LOADPIN.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---

Changes in v2:
- none

 drivers/md/Makefile               | 7 +------
 include/linux/dm-verity-loadpin.h | 2 +-
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index e12cd004d375..a96441752ec7 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -83,6 +83,7 @@ obj-$(CONFIG_DM_LOG_WRITES)	+= dm-log-writes.o
 obj-$(CONFIG_DM_INTEGRITY)	+= dm-integrity.o
 obj-$(CONFIG_DM_ZONED)		+= dm-zoned.o
 obj-$(CONFIG_DM_WRITECACHE)	+= dm-writecache.o
+obj-$(CONFIG_SECURITY_LOADPIN_VERITY)	+= dm-verity-loadpin.o
 
 ifeq ($(CONFIG_DM_INIT),y)
 dm-mod-objs			+= dm-init.o
@@ -100,12 +101,6 @@ ifeq ($(CONFIG_IMA),y)
 dm-mod-objs			+= dm-ima.o
 endif
 
-ifeq ($(CONFIG_DM_VERITY),y)
-ifeq ($(CONFIG_SECURITY_LOADPIN),y)
-dm-mod-objs			+= dm-verity-loadpin.o
-endif
-endif
-
 ifeq ($(CONFIG_DM_VERITY_FEC),y)
 dm-verity-objs			+= dm-verity-fec.o
 endif
diff --git a/include/linux/dm-verity-loadpin.h b/include/linux/dm-verity-loadpin.h
index 12a86911d05a..be63ac76f98d 100644
--- a/include/linux/dm-verity-loadpin.h
+++ b/include/linux/dm-verity-loadpin.h
@@ -13,7 +13,7 @@ struct trusted_root_digest {
 	struct list_head node;
 };
 
-#if IS_ENABLED(CONFIG_SECURITY_LOADPIN) && IS_BUILTIN(CONFIG_DM_VERITY)
+#if IS_ENABLED(CONFIG_SECURITY_LOADPIN_VERITY)
 void dm_verity_loadpin_set_trusted_root_digests(struct list_head *digests);
 bool dm_verity_loadpin_is_md_trusted(struct mapped_device *md);
 #else
-- 
2.36.0.rc2.479.g8af0fa9b8e-goog