Split BlueSky include files into public and private parts.

[bluesky.git] / bluesky / inode.c

diff --git a/bluesky/inode.c b/bluesky/inode.c
index 8faafa4..5e91432 100644 (file)
--- a/bluesky/inode.c
+++ b/bluesky/inode.c
@@ -8,10 +8,11 @@
 
 #include <stdio.h>
 #include <stdint.h>
+#include <inttypes.h>
 #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
@@ -72,6 +73,36 @@ BlueSkyFS *bluesky_new_fs(gchar *name)
     return fs;
 }
 
+BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store)
+{
+    BlueSkyRCStr *data = bluesky_store_get(store, "superblock");
+    if (data != NULL) {
+        BlueSkyFS *fs = bluesky_deserialize_superblock(data->data);
+        if (fs != NULL) {
+            fs->store = store;
+            g_print("Loaded filesystem superblock\n");
+            g_free(fs->name);
+            fs->name = g_strdup(name);
+            return fs;
+        }
+    }
+
+    g_print("Initializing fresh filesystem\n");
+    BlueSkyFS *fs = bluesky_new_fs(name);
+    fs->store = store;
+
+    BlueSkyInode *root = bluesky_new_inode(BLUESKY_ROOT_INUM, fs,
+                                           BLUESKY_DIRECTORY);
+    root->nlink = 1;
+    root->mode = 0755;
+    bluesky_insert_inode(fs, root);
+
+    bluesky_inode_flush(fs, root);
+    bluesky_superblock_flush(fs);
+
+    return fs;
+}
+
 /* Inode reference counting. */
 void bluesky_inode_ref(BlueSkyInode *inode)
 {
@@ -81,7 +112,7 @@ void bluesky_inode_ref(BlueSkyInode *inode)
 void bluesky_inode_unref(BlueSkyInode *inode)
 {
     if (g_atomic_int_dec_and_test(&inode->refcount)) {
-        g_error("Reference count for inode %lld dropped to zero!\n",
+        g_error("Reference count for inode %"PRIu64" dropped to zero!\n",
                 inode->inum);
     }
 }
@@ -95,6 +126,8 @@ uint64_t bluesky_fs_alloc_inode(BlueSkyFS *fs)
     inum = fs->next_inum;
     fs->next_inum++;
 
+    bluesky_superblock_flush(fs);
+
     return inum;
 }
 
@@ -116,6 +149,7 @@ BlueSkyInode *bluesky_new_inode(uint64_t inum, BlueSkyFS *fs,
     case BLUESKY_DIRECTORY:
         i->dirents = g_sequence_new(bluesky_dirent_destroy);
         i->dirhash = g_hash_table_new(g_str_hash, g_str_equal);
+        i->dirhash_folded = g_hash_table_new(g_str_hash, g_str_equal);
         break;
     case BLUESKY_BLOCK:
     case BLUESKY_CHARACTER:
@@ -145,7 +179,6 @@ BlueSkyInode *bluesky_get_inode(BlueSkyFS *fs, uint64_t inum)
     }
 
     if (inode != NULL) {
-        g_mutex_lock(inode->lock);
         bluesky_inode_ref(inode);
     }
 
@@ -170,7 +203,7 @@ void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode)
     BlueSkyRCStr *data = bluesky_string_new(g_string_free(buf, FALSE), len);
 
     char key[64];
-    sprintf(key, "inode-%016llx", inode->inum);
+    sprintf(key, "inode-%016"PRIx64, inode->inum);
 
     bluesky_store_put(fs->store, key, data);
 }
@@ -179,7 +212,7 @@ void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode)
 void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum)
 {
     char key[64];
-    sprintf(key, "inode-%016llx", inum);
+    sprintf(key, "inode-%016"PRIx64, inum);
     BlueSkyRCStr *data = bluesky_store_get(fs->store, key);
     if (data == NULL)
         return;
@@ -187,6 +220,19 @@ void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum)
     BlueSkyInode *inode = bluesky_deserialize_inode(fs, data->data);
     if (inode != NULL) {
         bluesky_insert_inode(fs, inode);
-        g_print("Loaded inode %lld\n", (long long)inum);
     }
 }
+
+/* Synchronize filesystem superblock to stable storage. */
+void bluesky_superblock_flush(BlueSkyFS *fs)
+{
+    GString *buf = g_string_new("");
+    bluesky_serialize_superblock(buf, fs);
+
+    g_print("Syncing superblock...\n");
+
+    gsize len = buf->len;
+    BlueSkyRCStr *data = bluesky_string_new(g_string_free(buf, FALSE), len);
+    bluesky_store_put(fs->store, "superblock", data);
+}
+