X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Fbluesky.h;h=7f237d30c73b9e64a613c38d6c2bf2f116ca6270;hb=a4e456f91da9819e5a1517d4e505816bb4aa1007;hp=8eff4126a348ebf8621ccbb9ab18da3a2b99bb6b;hpb=98e3e399a5cce3d1dd1b2a15d5746d1988943e7f;p=bluesky.git

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index 8eff412..7f237d3 100644
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -17,6 +17,22 @@
 extern "C" {
 #endif
 
+/* Various options to tweak for performance benchmarking purposes. */
+typedef struct {
+    /* Perform all get/put operations synchronously. */
+    int synchronous_stores;
+} BlueSkyOptions;
+
+extern BlueSkyOptions bluesky_options;
+
+/* BlueSky status and error codes.  Various frontends should translate these to
+ * the appropriate error code for whatever protocol they implement. */
+typedef enum {
+    BSTATUS_OK = 0,             /* No error */
+    BSTATUS_IOERR,              /* I/O error of some form */
+    BSTATUS_NOENT,              /* File does not exist */
+} BlueSkyStatus;
+
 void bluesky_init(void);
 
 gchar *bluesky_lowercase(const gchar *s);
@@ -30,38 +46,24 @@ typedef struct {
 } BlueSkyRCStr;
 
 BlueSkyRCStr *bluesky_string_new(gpointer data, gsize len);
+BlueSkyRCStr *bluesky_string_new_from_gstring(GString *s);
 void bluesky_string_ref(BlueSkyRCStr *string);
 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);
 
 /* Storage interface.  This presents a key-value store abstraction, and can
  * have multiple implementations: in-memory, on-disk, in-cloud. */
-typedef struct {
-    /* Create a new store instance and return a handle to it. */
-    gpointer (*create)();
-
-    /* Clean up any resources used by this store. */
-    void (*destroy)(gpointer store);
-
-    /* Fetch an item with the given name, or return NULL if not found. */
-    BlueSkyRCStr * (*get)(gpointer store, const gchar *key);
-
-    /* Store an item to the given key name. */
-    void (*put)(gpointer store, const gchar *key, BlueSkyRCStr *val);
-} BlueSkyStoreImplementation;
-
-void bluesky_store_register(const BlueSkyStoreImplementation *impl,
-                            const gchar *name);
-
 struct _BlueSkyStore;
 typedef struct _BlueSkyStore BlueSkyStore;
 
@@ -94,8 +96,6 @@ typedef struct {
     uint64_t next_inum;         /* Next available inode for allocation */
 
     BlueSkyStore *store;
-
-    uint8_t *encryption_key;
 } BlueSkyFS;
 
 /* Inode number of the root directory. */
@@ -141,6 +141,11 @@ typedef struct {
      * committed to stable storage. */
     uint64_t change_count, change_commit;
 
+    /* Timestamp for controlling when modified data is flushed to stable
+     * storage.  When an inode is first modified from a clean state, this is
+     * set to the current time.  If the inode is clean, it is set to zero. */
+    int64_t change_time;
+
     int64_t atime;              /* Microseconds since the Unix epoch */
     int64_t ctime;
     int64_t mtime;
@@ -188,7 +193,6 @@ typedef struct {
     BlueSkyRCStr *data;         /* Pointer to data in memory if cached */
 } BlueSkyBlock;
 
-BlueSkyFS *bluesky_new_fs(gchar *name);
 BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store);
 void bluesky_superblock_flush(BlueSkyFS *fs);
 
@@ -201,9 +205,9 @@ BlueSkyInode *bluesky_get_inode(BlueSkyFS *fs, uint64_t inum);
 void bluesky_insert_inode(BlueSkyFS *fs, BlueSkyInode *inode);
 
 void bluesky_dirent_destroy(gpointer dirent);
-uint64_t bluesky_directory_hash(gchar *name);
 uint64_t bluesky_directory_lookup(BlueSkyInode *inode, gchar *name);
 uint64_t bluesky_directory_ilookup(BlueSkyInode *inode, gchar *name);
+BlueSkyDirent *bluesky_directory_read(BlueSkyInode *dir, uint32_t cookie);
 gboolean bluesky_directory_insert(BlueSkyInode *dir, const gchar *name,
                                   uint64_t inum);
 void bluesky_directory_dump(BlueSkyInode *dir);
@@ -211,6 +215,7 @@ void bluesky_directory_dump(BlueSkyInode *dir);
 void bluesky_block_touch(BlueSkyInode *inode, uint64_t i);
 void bluesky_block_fetch(BlueSkyFS *fs, BlueSkyBlock *block);
 void bluesky_block_flush(BlueSkyFS *fs, BlueSkyBlock *block);
+void bluesky_file_flush(BlueSkyInode *inode);
 void bluesky_file_truncate(BlueSkyInode *inode, uint64_t size);
 void bluesky_file_write(BlueSkyInode *inode, uint64_t offset,
                         const char *data, gint len);
@@ -220,11 +225,6 @@ void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
 void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode);
 void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum);
 
-void bluesky_serialize_superblock(GString *out, BlueSkyFS *fs);
-BlueSkyFS *bluesky_deserialize_superblock(const gchar *buf);
-void bluesky_serialize_inode(GString *out, BlueSkyInode *inode);
-BlueSkyInode *bluesky_deserialize_inode(BlueSkyFS *fs, const gchar *buf);
-
 gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
                             gpointer unused);