diff mbox series

[06/42] mkfs.ubifs: Add fscrypto defines

Message ID 20181018143718.26298-7-richard@nod.at
State Accepted
Delegated to: David Oberhollenzer
Headers show
Series mtd-utils: Add fscrypt support to mkfs.ubifs | expand

Commit Message

Richard Weinberger Oct. 18, 2018, 2:36 p.m. UTC 
most of them should be UAPI, therefore check using #ifndef

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 ubifs-utils/mkfs.ubifs/mkfs.ubifs.c | 50 +++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
diff mbox series

Patch

diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
index e7acf17f6c96..2649c34cdd68 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.