From 2545d1f2a82bc7c23abc0034958b169f9fffe613 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Fri, 19 Nov 2010 23:48:03 +0000
Subject: MyriadFs is starting out...but the FUSE system is...akward at best.

---
 src/myriadfs.cpp | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 70 insertions(+), 2 deletions(-)

(limited to 'src/myriadfs.cpp')

diff --git a/src/myriadfs.cpp b/src/myriadfs.cpp
index bb72cd5..af60c08 100644
--- a/src/myriadfs.cpp
+++ b/src/myriadfs.cpp
@@ -1,7 +1,75 @@
-#include "myriadfs.h"
+#include "bu/myriadfs.h"
+#include "bu/myriadstream.h"
 
-Bu::MyriadFs::MyriadFs()
+#include <string.h>
+#include <unistd.h>
+
+namespace Bu { subExceptionDef( MyriadFsException ) }
+
+#define Myriad_Fs_MAGIC_CODE		((char *)"\xa7\x18\x8b\x39")
+
+Bu::MyriadFs::MyriadFs( Bu::Stream &rStore, int iBlockSize ) :
+	rStore( rStore ),
+	mStore( rStore, iBlockSize )
 {
+	if( mStore.hasStream( 1 ) )
+	{
+		// Check to see if this is a MyriadFs stream.
+		Bu::MyriadStream ms = mStore.openStream( 1 );
+		char sMagic[4];
+		if( ms.read( sMagic, 4 ) < 4 )
+			throw MyriadFsException("The provided stream does not appear to be "
+				"a MyriadFs stream.");
+		if( ::strncmp( sMagic, Myriad_Fs_MAGIC_CODE, 4 ) )
+			throw MyriadFsException("The provided stream does not appear to be "
+				"a MyriadFs stream.");
+	
+		int8_t iVer;
+	}
+	else
+	{
+		// Create initial header stream
+		{
+			mStore.createStream( 1 );
+			Bu::MyriadStream ms = mStore.openStream( 1 );
+			ms.write( Myriad_Fs_MAGIC_CODE, 4 );
+			int8_t iVer = 1;
+			int32_t iTmp = 1;
+			ms.write( &iVer, 1 );
+			ms.write( &iBlockSize, 4 );
+			ms.write( &iTmp, 4 ); // iNumNodes
+			iTmp = 0;
+			ms.write( &iTmp, 4 ); // iInode
+			ms.write( &iTmp, 0 ); // iPosition
+		}
+
+		// Create initial inode stream, with one root node.
+		{
+			mStore.createStream( 2 );
+			Bu::MyriadStream ms = mStore.openStream( 2 );
+			int32_t iUser = 0, iGroup = 0;
+#ifndef WIN32
+			iUser = getuid();
+			iGroup = getgid();
+#endif
+			int32_t iTmp32 = 0;
+			int16_t iTmp16 = 0;
+			ms.write( &iUser, 4 );
+			ms.write( &iGroup, 4 );
+			ms.write( &iTmp16, 2 );
+			ms.write( &iTmp16, 2 );
+			iTmp32 = 3;
+			ms.write( &iTmp32, 4 );
+			iTmp32 = 0;
+			ms.write( &iTmp32, 4 );
+			ms.write( &iTmp16, 2 );	
+		}
+
+		// Create inode 0's storage stream.
+		{
+			mStore.createStream( 3 );
+		}
+	}
 }
 
 Bu::MyriadFs::~MyriadFs()
-- 
cgit v1.2.3