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Specification node
data specification
   comment: datatype for on-flash data, @see ubifs_*_node in ubifs_media.h;

   using nat, page, 
         key, metadata

   data types node
               := inodenode(. .key : key;
                            . .meta : metadata;
                            . .directory : bool;
                            . .nlink : nat;
                            . .nsubdirs : nat;
                            . .size : nat) with .inode?
               | dentrynode(. .key : key;. .ino : nat) with .dentry?
               | datanode(. .key : key;. .data : buffer) with .data?
               | truncnode(. .key : key;. .size : nat) with .trunc?
               ;

   variables  nd : node;
              nd0 : node;
              nd1 : node;
              nd2 : node;
              nd3 : node;

   

   
end data specification