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From:   Matthias Kaehlcke <mka@chromium.org>
To:     Alasdair Kergon <agk@redhat.com>,
        Mike Snitzer <snitzer@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        James Morris <jmorris@namei.org>,
        "Serge E . Hallyn" <serge@hallyn.com>
Cc:     Song Liu <song@kernel.org>,
        Douglas Anderson <dianders@chromium.org>,
        linux-kernel@vger.kernel.org,
        linux-security-module@vger.kernel.org, linux-raid@vger.kernel.org,
        dm-devel@redhat.com, Milan Broz <gmazyland@gmail.com>,
        Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH v5 3/3] dm: verity-loadpin: Use CONFIG_SECURITY_LOADPIN_VERITY for conditional compilation
Date:   Wed, 18 May 2022 17:47:54 -0700
Message-Id: <20220518174739.v5.3.I5aca2dcc3b06de4bf53696cd21329dce8272b8aa@changeid>
In-Reply-To: <20220519004754.2174254-1-mka@chromium.org>
References: <20220519004754.2174254-1-mka@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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@chromium.org>
Acked-by: Kees Cook <keescook@chromium.org>
---

Changes in v5:
- added 'Acked-by' tag from Kees

Changes in v4:
- none

Changes in v3:
- none

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 71771901c823..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 ($(CONFIG_DM_INIT),y)
 dm-mod-objs			+= dm-init.o
@@ -108,12 +109,6 @@ ifeq ($(CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG),y)
 dm-verity-objs			+= dm-verity-verify-sig.o
 endif
 
-ifeq ($(CONFIG_DM_VERITY),y)
-ifeq ($(CONFIG_SECURITY_LOADPIN),y)
-dm-verity-objs			+= dm-verity-loadpin.o
-endif
-endif
-
 ifeq ($(CONFIG_DM_AUDIT),y)
 dm-mod-objs			+= dm-audit.o
 endif
diff --git a/include/linux/dm-verity-loadpin.h b/include/linux/dm-verity-loadpin.h
index d37146dbb1a8..ac5d9f56c3a3 100644
--- a/include/linux/dm-verity-loadpin.h
+++ b/include/linux/dm-verity-loadpin.h
@@ -15,7 +15,7 @@ struct trusted_root_digest {
 	u8 data[];
 };
 
-#if IS_ENABLED(CONFIG_SECURITY_LOADPIN) && IS_BUILTIN(CONFIG_DM_VERITY)
+#if IS_ENABLED(CONFIG_SECURITY_LOADPIN_VERITY)
 bool dm_verity_loadpin_is_bdev_trusted(struct block_device *bdev);
 #else
 static inline bool dm_verity_loadpin_is_bdev_trusted(struct block_device *bdev)
-- 
2.36.1.124.g0e6072fb45-goog