Crate task_fs

This crate contains the direcotires and files that comprise the taskfs, which is similar to the /proc directory in linux. There are four main sections in this code:

1. TaskFs: the top level directory that holds the individual TaskDirs
2. TaskDir: the lazily computed directory that contains files and directories relevant to that task
3. TaskFile: lazily computed file that holds information about the task
4. MmiDir: lazily computed directory that holds subdirectories and files about the task’s memory management information
5. MmiFile: lazily computed file that contains information about the task’s memory management information

• Note that all the structs here are NOT persistent in the filesystem EXCEPT for the TaskFs struct, which contains all the individual TaskDirs. This means that when a terminal cd’s into a TaskDir or one of the subdirectories, it is the only entity that has a reference to that directory. When the terminal drops that reference (i.e. backs out of the directory), that directory is dropped from scope

The hierarchy (tree) is as follows:

        TaskDir
    TaskFile    MmiDir
                    MmiFile

Structs

• MmiDir
  Lazily computed directory that contains subfiles and directories relevant to the task’s memory management information.
• MmiFile
  Lazily computed file that contains information about a task’s memory management information.
• TaskDir
  A lazily computed directory that holds files and subdirectories related to information about this Task
• TaskFile
  Lazily computed file that holds information about this task. This taskfile does not exist witin the actual filesystem.
• TaskFs
  The top level directory that includes a dynamically-generated list of all Tasks, each comprising a TaskDir. This directory exists in the root directory.

Constants

• TASKS_DIRECTORY_NAME
  The name of the VFS directory that exposes task info in the root.
• TASKS_DIRECTORY_PATH
  The absolute path of the tasks directory, which is currently below the root

Functions

• init
  Initializes the tasks virtual filesystem directory within the root directory.