Kernel/storage

File System Implementation

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Nodes

/storage

• node.cpp
  • ref_node <=> device
  • Handles open/close/read/write operations for the device

• ref_node.cpp
  • kernel/user <=> node.cpp
  • Maintains the count of references to a node and the seek position

• file_descriptor.cpp
  • user <=> ref_node.cpp
  • Manages the file descriptor table for user processes

• kernel_io.cpp
  • kernel <=> file_descriptor.cpp
  • Performs a similar role as file_descriptor.cpp but for kernel processes

/storage/fs

This directory contains the implementations of various file systems, such as fat32.cpp and ustar.cpp.

/storage/devices

This directory houses implementations of various devices, including /dev/null, /dev/zero, /dev/random, and more.