Add a prefetch method. At the moment it is a no-op.

[bluesky.git] / bluesky / bluesky.h

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index 54e8450..c27fb6c 100644 (file)
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -66,8 +66,8 @@ void bluesky_init(void);
 
 gchar *bluesky_lowercase(const gchar *s);
 
-struct _BlueSkyCacheFile;
-typedef struct _BlueSkyCacheFile BlueSkyCacheFile;
+struct BlueSkyCacheFile;
+typedef struct BlueSkyCacheFile BlueSkyCacheFile;
 
 typedef struct {
     gint refcount;
@@ -85,29 +85,35 @@ void bluesky_string_unref(BlueSkyRCStr *string);
 BlueSkyRCStr *bluesky_string_dup(BlueSkyRCStr *string);
 void bluesky_string_resize(BlueSkyRCStr *string, gsize len);
 
-/* Cryptographic operations. */
-#define CRYPTO_BLOCK_SIZE 16        /* 128-bit AES */
-#define CRYPTO_KEY_SIZE   16
-
-void bluesky_crypt_init();
-void bluesky_crypt_hash_key(const char *keystr, uint8_t *out);
-void bluesky_crypt_random_bytes(guchar *buf, gint len);
-BlueSkyRCStr *bluesky_crypt_encrypt(BlueSkyRCStr *in, const uint8_t *key);
-BlueSkyRCStr *bluesky_crypt_decrypt(BlueSkyRCStr *in, const uint8_t *key);
+struct BlueSkyRangeset;
+typedef struct BlueSkyRangeset BlueSkyRangeset;
+typedef struct {
+    uint64_t start, length;
+    gpointer data;
+} BlueSkyRangesetItem;
+
+BlueSkyRangeset *bluesky_rangeset_new();
+void bluesky_rangeset_free(BlueSkyRangeset *rangeset);
+gboolean bluesky_rangeset_insert(BlueSkyRangeset *rangeset,
+                                 uint64_t start, uint64_t length,
+                                 gpointer data);
+const BlueSkyRangesetItem *bluesky_rangeset_lookup(BlueSkyRangeset *rangeset,
+                                                   uint64_t offset);
+const BlueSkyRangesetItem *bluesky_rangeset_lookup_next(BlueSkyRangeset *rangeset, uint64_t offset);
 
 /* Storage interface.  This presents a key-value store abstraction, and can
  * have multiple implementations: in-memory, on-disk, in-cloud. */
-struct _BlueSkyStore;
-typedef struct _BlueSkyStore BlueSkyStore;
+struct BlueSkyStore;
+typedef struct BlueSkyStore BlueSkyStore;
 
-struct _BlueSkyLog;
-typedef struct _BlueSkyLog BlueSkyLog;
+struct BlueSkyLog;
+typedef struct BlueSkyLog BlueSkyLog;
 
-struct _BlueSkyCloudLogState;
-typedef struct _BlueSkyCloudLogState BlueSkyCloudLogState;
+struct BlueSkyCloudLogState;
+typedef struct BlueSkyCloudLogState BlueSkyCloudLogState;
 
-struct _BlueSkyCloudLog;
-typedef struct _BlueSkyCloudLog BlueSkyCloudLog;
+struct BlueSkyCloudLog;
+typedef struct BlueSkyCloudLog BlueSkyCloudLog;
 
 void bluesky_store_init();
 BlueSkyStore *bluesky_store_new(const gchar *type);
@@ -134,6 +140,8 @@ typedef enum {
 
 /* Filesystem state.  Each filesystem which is exported is represented by a
  * single bluesky_fs structure in memory. */
+struct BlueSkyCryptKeys;
+
 typedef struct {
     GMutex *lock;
 
@@ -145,6 +153,10 @@ typedef struct {
     BlueSkyLog *log;
     BlueSkyCloudLogState *log_state;
 
+    /* Filesystem crypto keys */
+    char *master_key;
+    struct BlueSkyCryptKeys *keys;
+
     /* Accounting for memory used for caches.  Space is measured in blocks, not
      * bytes.  Updates to these variables must be made atomically. */
     gint cache_dirty;
@@ -182,6 +194,12 @@ typedef struct {
     /* The inode map, which maps inode numbers to the location of the most
      * recent version. */
     GSequence *inode_map;
+
+    /* Queue for asynchronous cloudlog unrefs, where needed. */
+    GAsyncQueue *unref_queue;
+
+    /* Thread pool for asynchronous inode fetches */
+    GThreadPool *inode_fetch_thread_pool;
 } BlueSkyFS;
 
 /* Inode number of the root directory. */
@@ -301,8 +319,8 @@ typedef struct {
     BlueSkyRCStr *dirty;        /* if DIRTY: raw data in memory */
 } BlueSkyBlock;
 
-BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store);
-void bluesky_superblock_flush(BlueSkyFS *fs);
+BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store,
+                           const gchar *master_key);
 
 gboolean bluesky_inode_is_ready(BlueSkyInode *inode);