Resolve merge conflict and enable HW FBE for ext4 fs
HW File Based Encryption (FBE) uses Crypto Engine to
encrypt the user data with unique key for each file.
File name and data both are encrypted with this feature.
- security/pfk: New module to support per file
encryption using CE.
- fs/ext4: changes made to support using crypto engine
to encyrpt the data.
Other changes made to provide support framework for per
file encryption.
Change-Id: I82b05a73b10ad8c26b0e400cdf246c67a8060f0e
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
diff --git a/include/linux/pfk.h b/include/linux/pfk.h
new file mode 100644
index 0000000..3c7a389
--- /dev/null
+++ b/include/linux/pfk.h
@@ -0,0 +1,57 @@
+/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef PFK_H_
+#define PFK_H_
+
+#include <linux/bio.h>
+
+struct ice_crypto_setting;
+
+#ifdef CONFIG_PFK
+
+int pfk_load_key_start(const struct bio *bio,
+ struct ice_crypto_setting *ice_setting, bool *is_pfe, bool);
+int pfk_load_key_end(const struct bio *bio, bool *is_pfe);
+int pfk_remove_key(const unsigned char *key, size_t key_size);
+bool pfk_allow_merge_bio(const struct bio *bio1, const struct bio *bio2);
+void pfk_clear_on_reset(void);
+
+#else
+static inline int pfk_load_key_start(const struct bio *bio,
+ struct ice_crypto_setting *ice_setting, bool *is_pfe, bool async)
+{
+ return -ENODEV;
+}
+
+static inline int pfk_load_key_end(const struct bio *bio, bool *is_pfe)
+{
+ return -ENODEV;
+}
+
+static inline int pfk_remove_key(const unsigned char *key, size_t key_size)
+{
+ return -ENODEV;
+}
+
+static inline bool pfk_allow_merge_bio(const struct bio *bio1,
+ const struct bio *bio2)
+{
+ return true;
+}
+
+static inline void pfk_clear_on_reset(void)
+{}
+
+#endif /* CONFIG_PFK */
+
+#endif /* PFK_H */