GString *authenticated,
GString *writable);
+/* Cryptographic operations. */
+#define CRYPTO_BLOCK_SIZE 16 /* 128-bit AES */
+#define CRYPTO_KEY_SIZE 16
+#define CRYPTO_HASH_SIZE 32 /* SHA-256 */
+
+typedef struct BlueSkyCryptKeys {
+ uint8_t encryption_key[CRYPTO_KEY_SIZE];
+ uint8_t authentication_key[CRYPTO_HASH_SIZE];
+} BlueSkyCryptKeys;
+
+void bluesky_crypt_init();
+void bluesky_crypt_hash_key(const char *keystr, uint8_t *out);
+void bluesky_crypt_random_bytes(guchar *buf, gint len);
+void bluesky_crypt_derive_keys(BlueSkyCryptKeys *keys, const gchar *master);
+BlueSkyRCStr *bluesky_crypt_encrypt(BlueSkyRCStr *in, const uint8_t *key);
+BlueSkyRCStr *bluesky_crypt_decrypt(BlueSkyRCStr *in, const uint8_t *key);
+
/* Storage layer. Requests can be performed asynchronously, so these objects
* help keep track of operations in progress. */
typedef enum {
#define CLOUDLOG_JOURNAL 0x01
#define CLOUDLOG_CLOUD 0x02
#define CLOUDLOG_CACHE 0x04
+#define CLOUDLOG_UNCOMMITTED 0x10
struct _BlueSkyCloudLog {
gint refcount;
GMutex *lock;
BlueSkyCloudLog *bluesky_cloudlog_new(BlueSkyFS *fs, const BlueSkyCloudID *id);
gchar *bluesky_cloudlog_id_to_string(BlueSkyCloudID id);
BlueSkyCloudID bluesky_cloudlog_id_from_string(const gchar *idstr);
+void bluesky_cloudlog_threads_init(BlueSkyFS *fs);
void bluesky_cloudlog_ref(BlueSkyCloudLog *log);
void bluesky_cloudlog_unref(BlueSkyCloudLog *log);
+void bluesky_cloudlog_unref_delayed(BlueSkyCloudLog *log);
+void bluesky_cloudlog_erase(BlueSkyCloudLog *log);
void bluesky_cloudlog_stats_update(BlueSkyCloudLog *log, int type);
void bluesky_cloudlog_sync(BlueSkyCloudLog *log);
void bluesky_cloudlog_insert(BlueSkyCloudLog *log);
+void bluesky_cloudlog_insert_locked(BlueSkyCloudLog *log);
BlueSkyCloudLog *bluesky_cloudlog_get(BlueSkyFS *fs, BlueSkyCloudID id);
void bluesky_cloudlog_fetch(BlueSkyCloudLog *log);
BlueSkyCloudPointer bluesky_cloudlog_serialize(BlueSkyCloudLog *log,
typedef struct {
uint64_t inum;
- /* The ID of the most recent version of the inode. */
- BlueSkyCloudID id;
-
- /* The location where that version is written in the cloud. */
- BlueSkyCloudPointer location;
-
- /* If the cloud log entry exists in memory, then a pointer to it, otherwise
- * NULL. */
+ /* A pointer to the cloud log entry for this inode. This may or may not
+ * actually have data loaded (it might just contain pointers to the data
+ * location, and in fact this will likely often be the case). */
BlueSkyCloudLog *item;
} InodeMapEntry;
InodeMapEntry *bluesky_inode_map_lookup(GSequence *inode_map, uint64_t inum,
int action);
BlueSkyCloudLog *bluesky_inode_map_serialize(BlueSkyFS *fs);
+void bluesky_inode_map_minimize(BlueSkyFS *fs);
gboolean bluesky_checkpoint_load(BlueSkyFS *fs);