File System

File System

1. Level acces

   • File System Interface
     • user(more visible)
       • Acces Metods,Directory Structure,Protection
   • File System Implementation
     • SO(less visible)
       • Allocation and Free Space Management,Directory Implementation

2. Usually the Operating System understands and interprets file types.

3. is a collection of related bytes, have a type, have entry a directory, have attributes

   • kinds of structure
     • None:- sequence of words, bytes
     • Simple record structure
       • Lines • Fixed length • Variable length
     • Complex Structures
       • Formatted document • Relocatable load file
     • is interprets for Operating system • Program

4. Attributes of a File

   • name,Identifier,Type, location ,Size protection, data for protection

5. kind of acces

   • SEQUENTIAL ACCESS
   • DIRECT ACCESS
   • Indexed