Uint32 Ext2_int_AllocateBlock(tExt2_Disk *Disk, Uint32 PrevBlock);
void Ext2_int_DeallocateBlock(tExt2_Disk *Disk, Uint32 Block);
int Ext2_int_AppendBlock(tExt2_Disk *Disk, tExt2_Inode *Inode, Uint32 Block);
Uint32 Ext2_int_AllocateBlock(tExt2_Disk *Disk, Uint32 PrevBlock);
void Ext2_int_DeallocateBlock(tExt2_Disk *Disk, Uint32 Block);
int Ext2_int_AppendBlock(tExt2_Disk *Disk, tExt2_Inode *Inode, Uint32 Block);