file_system

• todo: *multi users , the privelage control.(don't wanna figure out...)

data structure:

• SuperBlock:

  simplified defined as: bitmap record & free blocks manage & fs information

• inode(96 Bytes):

  1. user id
  2. file mode & time information
  3. file blocks pos & blocks count

• dir file(1024 Bytes):

  1. set of dir entry
  2. number of dir entrys

• dir entry(64 Bytes):

  1. inode id
  2. dname

• data file(1024 Bytes):

  bufffer