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authorJames Morris <jmorris@namei.org>2011-09-15 09:53:38 +1000
committerJames Morris <jmorris@namei.org>2011-09-15 09:53:38 +1000
commit8de6ac7f58a22fdab399fbe97763e465ea49c735 (patch)
tree46104451c69f5270fcc11137aecff012a2ecf612 /security/keys
parent843d183cdd816549b73e6bd3ae07f64adddf714b (diff)
parentfb788d8b981fa55603873416882f8dcf835e7924 (diff)
Merge branch 'next-evm' of git://github.com/mzohar/linux-evm into next
Diffstat (limited to 'security/keys')
-rw-r--r--security/keys/Makefile2
-rw-r--r--security/keys/encrypted-keys/Makefile6
-rw-r--r--security/keys/encrypted-keys/ecryptfs_format.c (renamed from security/keys/ecryptfs_format.c)0
-rw-r--r--security/keys/encrypted-keys/ecryptfs_format.h (renamed from security/keys/ecryptfs_format.h)0
-rw-r--r--security/keys/encrypted-keys/encrypted.c (renamed from security/keys/encrypted.c)35
-rw-r--r--security/keys/encrypted-keys/encrypted.h (renamed from security/keys/encrypted.h)11
-rw-r--r--security/keys/encrypted-keys/masterkey_trusted.c44
7 files changed, 70 insertions, 28 deletions
diff --git a/security/keys/Makefile b/security/keys/Makefile
index b34cc6ee690..a56f1ffdc64 100644
--- a/security/keys/Makefile
+++ b/security/keys/Makefile
@@ -14,7 +14,7 @@ obj-y := \
user_defined.o
obj-$(CONFIG_TRUSTED_KEYS) += trusted.o
-obj-$(CONFIG_ENCRYPTED_KEYS) += ecryptfs_format.o encrypted.o
+obj-$(CONFIG_ENCRYPTED_KEYS) += encrypted-keys/
obj-$(CONFIG_KEYS_COMPAT) += compat.o
obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_SYSCTL) += sysctl.o
diff --git a/security/keys/encrypted-keys/Makefile b/security/keys/encrypted-keys/Makefile
new file mode 100644
index 00000000000..6bc7a86d102
--- /dev/null
+++ b/security/keys/encrypted-keys/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for encrypted keys
+#
+
+obj-$(CONFIG_ENCRYPTED_KEYS) += encrypted.o ecryptfs_format.o
+obj-$(CONFIG_TRUSTED_KEYS) += masterkey_trusted.o
diff --git a/security/keys/ecryptfs_format.c b/security/keys/encrypted-keys/ecryptfs_format.c
index 6daa3b6ff9e..6daa3b6ff9e 100644
--- a/security/keys/ecryptfs_format.c
+++ b/security/keys/encrypted-keys/ecryptfs_format.c
diff --git a/security/keys/ecryptfs_format.h b/security/keys/encrypted-keys/ecryptfs_format.h
index 40294de238b..40294de238b 100644
--- a/security/keys/ecryptfs_format.h
+++ b/security/keys/encrypted-keys/ecryptfs_format.h
diff --git a/security/keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index e7eca9ec4c6..3f577954b85 100644
--- a/security/keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -299,31 +299,6 @@ out:
}
/*
- * request_trusted_key - request the trusted key
- *
- * Trusted keys are sealed to PCRs and other metadata. Although userspace
- * manages both trusted/encrypted key-types, like the encrypted key type
- * data, trusted key type data is not visible decrypted from userspace.
- */
-static struct key *request_trusted_key(const char *trusted_desc,
- u8 **master_key, size_t *master_keylen)
-{
- struct trusted_key_payload *tpayload;
- struct key *tkey;
-
- tkey = request_key(&key_type_trusted, trusted_desc, NULL);
- if (IS_ERR(tkey))
- goto error;
-
- down_read(&tkey->sem);
- tpayload = rcu_dereference(tkey->payload.data);
- *master_key = tpayload->key;
- *master_keylen = tpayload->key_len;
-error:
- return tkey;
-}
-
-/*
* request_user_key - request the user key
*
* Use a user provided key to encrypt/decrypt an encrypted-key.
@@ -469,8 +444,14 @@ static struct key *request_master_key(struct encrypted_key_payload *epayload,
goto out;
if (IS_ERR(mkey)) {
- pr_info("encrypted_key: key %s not found",
- epayload->master_desc);
+ int ret = PTR_ERR(epayload);
+
+ if (ret == -ENOTSUPP)
+ pr_info("encrypted_key: key %s not supported",
+ epayload->master_desc);
+ else
+ pr_info("encrypted_key: key %s not found",
+ epayload->master_desc);
goto out;
}
diff --git a/security/keys/encrypted.h b/security/keys/encrypted-keys/encrypted.h
index cef5e2f2b7d..b6ade894525 100644
--- a/security/keys/encrypted.h
+++ b/security/keys/encrypted-keys/encrypted.h
@@ -2,6 +2,17 @@
#define __ENCRYPTED_KEY_H
#define ENCRYPTED_DEBUG 0
+#ifdef CONFIG_TRUSTED_KEYS
+extern struct key *request_trusted_key(const char *trusted_desc,
+ u8 **master_key, size_t *master_keylen);
+#else
+static inline struct key *request_trusted_key(const char *trusted_desc,
+ u8 **master_key,
+ size_t *master_keylen)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+#endif
#if ENCRYPTED_DEBUG
static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
diff --git a/security/keys/encrypted-keys/masterkey_trusted.c b/security/keys/encrypted-keys/masterkey_trusted.c
new file mode 100644
index 00000000000..a5da5128891
--- /dev/null
+++ b/security/keys/encrypted-keys/masterkey_trusted.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2010 IBM Corporation
+ * Copyright (C) 2010 Politecnico di Torino, Italy
+ * TORSEC group -- http://security.polito.it
+ *
+ * Authors:
+ * Mimi Zohar <zohar@us.ibm.com>
+ * Roberto Sassu <roberto.sassu@polito.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * See Documentation/security/keys-trusted-encrypted.txt
+ */
+
+#include <linux/uaccess.h>
+#include <linux/module.h>
+#include <keys/trusted-type.h>
+
+/*
+ * request_trusted_key - request the trusted key
+ *
+ * Trusted keys are sealed to PCRs and other metadata. Although userspace
+ * manages both trusted/encrypted key-types, like the encrypted key type
+ * data, trusted key type data is not visible decrypted from userspace.
+ */
+struct key *request_trusted_key(const char *trusted_desc,
+ u8 **master_key, size_t *master_keylen)
+{
+ struct trusted_key_payload *tpayload;
+ struct key *tkey;
+
+ tkey = request_key(&key_type_trusted, trusted_desc, NULL);
+ if (IS_ERR(tkey))
+ goto error;
+
+ down_read(&tkey->sem);
+ tpayload = rcu_dereference(tkey->payload.data);
+ *master_key = tpayload->key;
+ *master_keylen = tpayload->key_len;
+error:
+ return tkey;
+}