From 07eac8709bced5f814a65fa0d5dd62e4bd649a9a Mon Sep 17 00:00:00 2001
From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Fri, 11 Sep 2009 14:02:53 -0700
Subject: [PATCH] Ensure file size is properly serialized/deserialized.

---
 bluesky/inode.c     | 2 ++
 bluesky/serialize.c | 8 +++++++-
 bluesky/store.c     | 2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/bluesky/inode.c b/bluesky/inode.c
index 3430b19..4d07a52 100644
--- a/bluesky/inode.c
+++ b/bluesky/inode.c
@@ -180,6 +180,8 @@ void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum)
     char key[64];
     sprintf(key, "inode-%016llx", inum);
     BlueSkyRCStr *data = bluesky_store_get(fs->store, key);
+    if (data == NULL)
+        return;
 
     BlueSkyInode *inode = bluesky_deserialize_inode(fs, data->data);
     if (inode != NULL) {
diff --git a/bluesky/serialize.c b/bluesky/serialize.c
index 8043cc0..eaa9258 100644
--- a/bluesky/serialize.c
+++ b/bluesky/serialize.c
@@ -18,7 +18,7 @@
 
 /* Magic signature for serialized inodes. */
 
-#define INODE_MAGIC 0xa6832100943d71e5ULL
+#define INODE_MAGIC 0xa6832100943d71e6ULL
 
 struct serialized_inode {
     uint64_t signature;         /* INODE_MAGIC */
@@ -55,6 +55,9 @@ void bluesky_serialize_inode(GString *out, BlueSkyInode *inode)
 
     switch (inode->type) {
     case BLUESKY_REGULAR:
+    {
+        uint64_t size = GUINT64_TO_LE(inode->size);
+        g_string_append_len(out, (gchar *)&size, sizeof(uint64_t));
         for (int i = 0; i < inode->blocks->len; i++) {
             BlueSkyBlock *b = &g_array_index(inode->blocks, BlueSkyBlock, i);
             if (b->ref != NULL)
@@ -62,6 +65,7 @@ void bluesky_serialize_inode(GString *out, BlueSkyInode *inode)
             g_string_append_c(out, '\0');
         }
         break;
+    }
 
     case BLUESKY_DIRECTORY:
     {
@@ -120,6 +124,8 @@ BlueSkyInode *bluesky_deserialize_inode(BlueSkyFS *fs, const gchar *buf)
     /* TODO: Bounds checking */
     switch (inode->type) {
     case BLUESKY_REGULAR:
+        inode->size = GINT64_FROM_LE(*(uint64_t *)buf);
+        buf += sizeof(uint64_t);
         g_array_set_size(inode->blocks,
                          (inode->size + BLUESKY_BLOCK_SIZE - 1)
                           / BLUESKY_BLOCK_SIZE);
diff --git a/bluesky/store.c b/bluesky/store.c
index abe7020..9e0fca1 100644
--- a/bluesky/store.c
+++ b/bluesky/store.c
@@ -178,7 +178,7 @@ static BlueSkyRCStr *filestore_get(gpointer s, const gchar *key)
 {
     gchar *contents = NULL;
     gsize length;
-    GError *error;
+    GError *error = NULL;
 
     g_file_get_contents(key, &contents, &length, &error);
     if (contents == NULL)
-- 
2.20.1