Expose the .machine keyring created in integrity code by adding
a reference. Store a reference to the machine keyring in
system keyring code. The system keyring code needs this to complete
the keyring link to the machine keyring.
Signed-off-by: Eric Snowberg <eric.snowberg@xxxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Tested-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
---
v2: Initial version
v3: Unmodified from v2
v4: Removed trust_moklist check
v5: Rename to machine keyring
v8: Unmodified from v5
v9: Combine with "add reference to machine keyring" patch
v10: Added Jarkko's Reviewed-by and Mimi's Tested-by
---
certs/system_keyring.c | 9 +++++++++
include/keys/system_keyring.h | 8 ++++++++
security/integrity/digsig.c | 2 ++
3 files changed, 19 insertions(+)
diff --git a/certs/system_keyring.c b/certs/system_keyring.c
index 692365dee2bd..08ea542c8096 100644
--- a/certs/system_keyring.c
+++ b/certs/system_keyring.c
@@ -22,6 +22,9 @@ static struct key *builtin_trusted_keys;
#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
static struct key *secondary_trusted_keys;
#endif
+#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
+static struct key *machine_trusted_keys;
+#endif
#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
static struct key *platform_trusted_keys;
#endif
@@ -91,6 +94,12 @@ static __init struct key_restriction *get_builtin_and_secondary_restriction(void
return restriction;
}
#endif
+#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
+void __init set_machine_trusted_keys(struct key *keyring)
+{
+ machine_trusted_keys = keyring;
+}
+#endif
/*
* Create the trusted keyrings
diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h
index 6acd3cf13a18..98c9b10cdc17 100644
--- a/include/keys/system_keyring.h
+++ b/include/keys/system_keyring.h
@@ -38,6 +38,14 @@ extern int restrict_link_by_builtin_and_secondary_trusted(
#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
#endif
+#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
+extern void __init set_machine_trusted_keys(struct key *keyring);
+#else
+static inline void __init set_machine_trusted_keys(struct key *keyring)
+{
+}
+#endif
+
extern struct pkcs7_message *pkcs7;
#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
extern int mark_hash_blacklisted(const char *hash);
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index 2b7fa85613c0..7b719aa76188 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -112,6 +112,8 @@ static int __init __integrity_init_keyring(const unsigned int id,
} else {
if (id == INTEGRITY_KEYRING_PLATFORM)
set_platform_trusted_keys(keyring[id]);
+ if (id == INTEGRITY_KEYRING_MACHINE)
+ set_machine_trusted_keys(keyring[id]);
if (id == INTEGRITY_KEYRING_IMA)
load_module_cert(keyring[id]);
}
--
2.18.4
