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Subject[RFC PATCH 08/12] KEYS: Make the system trusted keyring depend on the asymmetric key type [ver #3]
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Make the system trusted keyring depend on the asymmetric key type as
there's not a lot of point having it if you can't then load asymmetric keys
onto it.

This requires the ASYMMETRIC_KEY_TYPE to be made a bool, not a tristate, as
the Kconfig language doesn't then correctly force ASYMMETRIC_KEY_TYPE to
'y' rather than 'm' if SYSTEM_TRUSTED_KEYRING is 'y'.

Making SYSTEM_TRUSTED_KEYRING *select* ASYMMETRIC_KEY_TYPE instead doesn't
work as the Kconfig interpreter then wrongly complains about dependency
loops.

Signed-off-by: David Howells <dhowells@redhat.com>
---

certs/Kconfig | 1 +
crypto/asymmetric_keys/Kconfig | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/certs/Kconfig b/certs/Kconfig
index f0f8a4433685..743d480f5f6f 100644
--- a/certs/Kconfig
+++ b/certs/Kconfig
@@ -17,6 +17,7 @@ config MODULE_SIG_KEY
config SYSTEM_TRUSTED_KEYRING
bool "Provide system-wide ring of trusted keys"
depends on KEYS
+ depends on ASYMMETRIC_KEY_TYPE
help
Provide a system keyring to which trusted keys can be added. Keys in
the keyring are considered to be trusted. Keys may be added at will
diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
index f7d2ef9789d8..e28e912000a7 100644
--- a/crypto/asymmetric_keys/Kconfig
+++ b/crypto/asymmetric_keys/Kconfig
@@ -1,5 +1,5 @@
menuconfig ASYMMETRIC_KEY_TYPE
- tristate "Asymmetric (public-key cryptographic) key type"
+ bool "Asymmetric (public-key cryptographic) key type"
depends on KEYS
help
This option provides support for a key type that holds the data for
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