mkfs.ubifs: Add fscrypto defines

most of them should be UAPI, therefore check using #ifndef

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
index e7acf17f6c96be250e3a2a6ffe8d570bd02e16af..2649c34cdd68bc94816202d49f2af8908a97d35b 100644 (file)
--- 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.