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authorRichard Weinberger <richard@nod.at>2018-10-18 16:36:42 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2018-11-01 12:37:40 +0100
commit629a8e46826453076a7ec31c724bcf793a0f527d (patch)
tree742c0c6eea5b2a1a040e43d22fd9a936d5e26cc0 /ubifs-utils/mkfs.ubifs
parent2fd902f11823433ba9332da3106253b674563542 (diff)
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>
Diffstat (limited to 'ubifs-utils/mkfs.ubifs')
-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.