#include <glib.h>
#include <string.h>
-#include "bluesky.h"
+#include "bluesky-private.h"
/* Core filesystem. Different proxies, such as the NFSv3 one, interface to
* this, but the core actually tracks the data which is stored. So far we just
/* Update an inode to indicate that a modification was made. This increases
* the change counter, updates the ctime to the current time, and optionally
- * updates the mtime. inode must already be locked. */
+ * updates the mtime. This also makes the inode contents subject to writeback
+ * to storage in the future. inode must already be locked. */
void bluesky_inode_update_ctime(BlueSkyInode *inode, gboolean update_mtime)
{
int64_t now = bluesky_get_current_time();
inode->ctime = now;
if (update_mtime)
inode->mtime = now;
+
+ if (inode->change_time == 0)
+ inode->change_time = now;
+
+ if (bluesky_options.writethrough_cache)
+ bluesky_file_flush(inode, NULL);
}
/* Unfortunately a glib hash table is only guaranteed to be able to store
{
BlueSkyInode *inode = NULL;
+ if (inum == 0) {
+ return NULL;
+ }
+
g_mutex_lock(fs->lock);
inode = (BlueSkyInode *)g_hash_table_lookup(fs->inodes, &inum);
g_hash_table_insert(fs->inodes, &inode->inum, inode);
}
-/* Synchronize an inode to stable storage. */
+/* Deprecated: Synchronize an inode to stable storage. */
void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode)
{
GString *buf = g_string_new("");
bluesky_serialize_inode(buf, inode);
+ BlueSkyRCStr *data = bluesky_string_new_from_gstring(buf);
- gsize len = buf->len;
- BlueSkyRCStr *data = bluesky_string_new(g_string_free(buf, FALSE), len);
+ char key[64];
+ sprintf(key, "inode-%016"PRIx64, inode->inum);
+
+ BlueSkyStoreAsync *async = bluesky_store_async_new(fs->store);
+ async->op = STORE_OP_PUT;
+ async->key = g_strdup(key);
+ async->data = data;
+ bluesky_store_async_submit(async);
+ bluesky_store_async_unref(async);
+}
+
+/* Start writeback of an inode and all associated data. */
+void bluesky_inode_start_sync(BlueSkyInode *inode, BlueSkyStoreAsync *barrier)
+{
+ BlueSkyFS *fs = inode->fs;
+
+ GString *buf = g_string_new("");
+ bluesky_serialize_inode(buf, inode);
+ BlueSkyRCStr *data = bluesky_string_new_from_gstring(buf);
+
+ if (inode->type == BLUESKY_REGULAR)
+ bluesky_file_flush(inode, barrier);
char key[64];
sprintf(key, "inode-%016"PRIx64, inode->inum);
- bluesky_store_put(fs->store, key, data);
+ BlueSkyStoreAsync *async = bluesky_store_async_new(fs->store);
+ async->op = STORE_OP_PUT;
+ async->key = g_strdup(key);
+ async->data = data;
+ bluesky_store_async_submit(async);
+ if (barrier != NULL)
+ bluesky_store_add_barrier(barrier, async);
+ bluesky_store_async_unref(async);
}
/* Fetch an inode from stable storage. */
{
GString *buf = g_string_new("");
bluesky_serialize_superblock(buf, fs);
+ BlueSkyRCStr *data = bluesky_string_new_from_gstring(buf);
- g_print("Syncing superblock...\n");
+ BlueSkyStoreAsync *async = bluesky_store_async_new(fs->store);
+ async->op = STORE_OP_PUT;
+ async->key = g_strdup("superblock");
+ async->data = data;
+ bluesky_store_async_submit(async);
+ bluesky_store_async_unref(async);
- gsize len = buf->len;
- BlueSkyRCStr *data = bluesky_string_new(g_string_free(buf, FALSE), len);
- bluesky_store_put(fs->store, "superblock", data);
+ bluesky_store_sync(fs->store);
}
-