MyriadFs is starting out...but the FUSE system is...akward at best.

1 files changed, 18 insertions, 2 deletions

diff --git a/src/myriadfs.h b/src/myriadfs.h
index 687584b..42a3493 100644
--- a/src/myriadfs.h
+++ b/src/myriadfs.h
@@ -1,13 +1,20 @@
 #ifndef MYRIAD_FS_H
 #define MYRIAD_FS_H
 
+#include "bu/myriad.h"
+
 namespace Bu
 {
+        class Stream;
+
+        subExceptionDecl( MyriadFsException );
+
         /**
          * A POSIX compliant, node based filesystem built on top of Myriad.
          *
+         * A header is placed into stream 1.
          * Header format:
-         *   int32_t iMagicHeader
+         *   int32_t iMagicHeader  (A7188B39)
          *   int8_t iVersion (1)
          *   int32_t iNodeSize
          *   int32_t iNumNodes
@@ -17,6 +24,11 @@ namespace Bu
          *   int32_t iInode
          *   int32_t iPosition
          *
+         * The node headers or inode structures have a base size of 22 bytes.
+         * Everything else in the block is used for the name.  I.e. if you have
+         * a blocksize of 512 bytes then you wind up with a max name size of
+         * 512-22=490 characters, or a blocksize of 256 gives you 234 chraacters
+         * as a max.  The node headers are all stored in stream 2.
          * Basic node header format:
          *   int32_t iUser
          *   int32_t iGroup
@@ -30,8 +42,12 @@ namespace Bu
         class MyriadFs
         {
         public:
-                MyriadFs();
+                MyriadFs( Bu::Stream &rStore, int iBlockSize=512 );
                 virtual ~MyriadFs();
+
+        private:
+                Bu::Stream &rStore;
+                Bu::Myriad mStore;
         };
 };