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-rw-r--r--ubifs-utils/mkfs.ubifs/mkfs.ubifs.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
index e7acf17..2649c34 100644
--- a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
+++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
@@ -109,6 +109,56 @@ struct inum_mapping {
struct stat st;
};
+#ifndef FS_KEY_DESCRIPTOR_SIZE
+#define FS_KEY_DESCRIPTOR_SIZE 8
+#endif
+#define FS_ENCRYPTION_CONTEXT_FORMAT_V1 1
+#define FS_KEY_DERIVATION_NONCE_SIZE 16
+
+#ifndef FS_ENCRYPTION_MODE_AES_128_CBC
+#define FS_ENCRYPTION_MODE_AES_128_CBC 5
+#endif
+
+#ifndef FS_ENCRYPTION_MODE_AES_128_CTS
+#define FS_ENCRYPTION_MODE_AES_128_CTS 6
+#endif
+
+#ifndef FS_POLICY_FLAGS_VALID
+#define FS_POLICY_FLAGS_PAD_4 0x00
+#define FS_POLICY_FLAGS_PAD_8 0x01
+#define FS_POLICY_FLAGS_PAD_16 0x02
+#define FS_POLICY_FLAGS_PAD_32 0x03
+#define FS_POLICY_FLAGS_PAD_MASK 0x03
+#define FS_POLICY_FLAGS_VALID 0x03
+#endif
+
+#define FS_CRYPTO_BLOCK_SIZE 16
+
+/**
+ * Encryption context for inode
+ *
+ * Protector format:
+ * 1 byte: Protector format (1 = this version)
+ * 1 byte: File contents encryption mode
+ * 1 byte: File names encryption mode
+ * 1 byte: Flags
+ * 8 bytes: Master Key descriptor
+ * 16 bytes: Encryption Key derivation nonce
+ */
+struct fscrypt_context {
+ __u8 format;
+ __u8 contents_encryption_mode;
+ __u8 filenames_encryption_mode;
+ __u8 flags;
+ __u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE];
+ __u8 nonce[FS_KEY_DERIVATION_NONCE_SIZE];
+} __attribute__((packed));
+
+#ifndef FS_MAX_KEY_SIZE
+#define FS_MAX_KEY_SIZE 64
+#endif
+static __u8 fscrypt_masterkey[FS_MAX_KEY_SIZE];
+
/*
* Because we copy functions from the kernel, we use a subset of the UBIFS
* file-system description object struct ubifs_info.