[v7,3/3] dm: verity-loadpin: Use CONFIG_SECURITY_LOADPIN_VERITY for conditional compilation

Commit Message

Matthias Kaehlcke June 27, 2022, 3:35 p.m. UTC

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 <[e-mail]>
Acked-by: Kees Cook <[e-mail]>
---

Changes in v7:
- none

Changes in v6:
- none

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(-)

Comments

Mike Snitzer July 6, 2022, 3:09 p.m. UTC | #1

On Mon, Jun 27 2022 at 11:35P -0400,
Matthias Kaehlcke <[e-mail]> wrote:

> 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 <[e-mail]>
> Acked-by: Kees Cook <[e-mail]>

Acked-by: Mike Snitzer <[e-mail]>

Patch

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 fb695ecaa5d5..552b817ab102 100644
--- a/include/linux/dm-verity-loadpin.h
+++ b/include/linux/dm-verity-loadpin.h
@@ -15,7 +15,7 @@  struct dm_verity_loadpin_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)