Well, unlink, mkHardLink, setFileSize, and more are freshly implemented, as is

rename, but there seems to be a problem, rename uses mkHardLink, and if the
target exists, hey, it adds another one...not quite ideal...

1 files changed, 63 insertions, 6 deletions

diff --git a/src/myriadfs.cpp b/src/myriadfs.cpp
index 41ba652..cebae1c 100644
--- a/src/myriadfs.cpp
+++ b/src/myriadfs.cpp
@@ -191,8 +191,8 @@ void Bu::MyriadFs::mkDir( const Bu::String &sPath, uint16_t iPerms )
         create( sPath, (iPerms&permMask)|typeDir, 0 );
 }
 
-void Bu::MyriadFs::mkSymLink( const Bu::String &sPath,
-                const Bu::String &sTarget )
+void Bu::MyriadFs::mkSymLink( const Bu::String &sTarget,
+                const Bu::String &sPath )
 {
         int32_t iParent = -1;
         int32_t iNode;
@@ -222,6 +222,42 @@ void Bu::MyriadFs::mkSymLink( const Bu::String &sPath,
         }
 }
 
+void Bu::MyriadFs::mkHardLink( const Bu::String &sTarget,
+                const Bu::String &sPath )
+{
+        int32_t iParent = -1;
+        int32_t iNode;
+        
+        iNode = lookupInode( sTarget, iParent );
+
+        try
+        {
+                lookupInode( sPath, iParent );
+                throw Bu::MyriadFsException("Path already exists.");
+        }
+        catch( Bu::MyriadFsException &e )
+        {
+                if( iParent < 0 )
+                        throw;
+
+                // This means that an intermediate path component couldn't be found
+                if( e.getErrorCode() == 1 )
+                        throw;
+
+                // The file wasn't found, but the path leading up to it was.
+                // first, figure out the final path element...
+                Bu::String sName = filePart( sPath );
+                sio << "End filename: " << sName << sio.nl;
+                sio << "Parent inode: " << iParent << sio.nl;
+                addToDir( iParent, iNode, sName );
+                MyriadStream is = mStore.openStream( 2 );
+                RawStat rs;
+                readInode( iNode, rs, is );
+                rs.iLinks++;
+                writeInode( rs, is );
+        }
+}
+
 Bu::String Bu::MyriadFs::readSymLink( const Bu::String &sPath )
 {
         int32_t iParent = -1;
@@ -305,6 +341,21 @@ void Bu::MyriadFs::unlink( const Bu::String &sPath )
         ms.setSize( ms.tell() );
 }
 
+void Bu::MyriadFs::setFileSize( const Bu::String &sPath, int32_t iSize )
+{
+        int32_t iParent = -1;
+        int32_t iNode;
+        iNode = lookupInode( sPath, iParent );
+        MyriadStream ms = openByInode( iNode );
+        ms.setSize( iSize );
+}
+
+void Bu::MyriadFs::rename( const Bu::String &sFrom, const Bu::String &sTo )
+{
+        mkHardLink( sFrom, sTo );
+        unlink( sFrom );
+}
+
 dev_t Bu::MyriadFs::devToSys( uint32_t uDev )
 {
         return (((uDev&0xFFFF0000)>>8)&0xFF00) | ((uDev&0xFF));
@@ -454,25 +505,31 @@ Bu::MyriadStream Bu::MyriadFs::openByInode( int32_t iNode )
         }
 }
 
-int32_t Bu::MyriadFs::create( int32_t iParent, const Bu::String &sName,
-                uint16_t uPerms, uint32_t uSpecial )
+void Bu::MyriadFs::addToDir( int32_t iDir, int32_t iNode,
+                const Bu::String &sName )
 {
         if( sName.getSize() > 255 )
         {
                 throw Bu::MyriadFsException("Filename too long, max is 255 bytes.");
         }
-        Bu::MyriadStream ms = openByInode( iParent );
+        Bu::MyriadStream ms = openByInode( iDir );
         int32_t iNumChildren = 0;
         ms.read( &iNumChildren, 4 );
         iNumChildren++;
         ms.setPos( 0 );
         ms.write( &iNumChildren, 4 );
         ms.setPosEnd( 0 );
-        int32_t iNode = allocInode( uPerms, uSpecial );
         ms.write( &iNode, 4 );
         uint8_t uLen = sName.getSize();
         ms.write( &uLen, 1 );
         ms.write( sName.getStr(), uLen );
+}
+
+int32_t Bu::MyriadFs::create( int32_t iParent, const Bu::String &sName,
+                uint16_t uPerms, uint32_t uSpecial )
+{
+        int32_t iNode = allocInode( uPerms, uSpecial );
+        addToDir( iParent, iNode, sName );
         return iNode;
 }