source: rtems/doc/filesystem/lifecycle.t @ 29ed4d5

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Last change on this file since 29ed4d5 was 29ed4d5, checked in by Joel Sherrill <joel.sherrill@…>, on 10/08/99 at 18:59:37

Added lifecycle chapter.

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1@c
2@c  COPYRIGHT (c) 1988-1998.
3@c  On-Line Applications Research Corporation (OAR).
4@c  All rights reserved.
5@c
6@c  $Id$
7@c
8
9@chapter File System Lifecycle
10
11This chapter describes some of the dynamic behavior of file system control
12structures
13
14@section Mount table chain
15
16The mount table chain is a dynamic list of structures that describe
17mounted file systems a specific points in the file system hierarchy. It is
18initialized to an empty state during the base file system initialization.
19The mount operation will add entries to the mount table chain. The
20un-mount operation will remove entries from the mount table chain.
21
22@section Memory associated with the In Memory File System
23
24A memory based file system draws its resources for files and directories
25from the memory resources of the system. When it is time to un-mount the
26file system, the memory resources that supported file system are set free.
27In order to free these resources, a recursive walk of the file systems
28tree structure will be performed. As the leaf nodes under the file system
29are encountered their resources are freed. When directories are made empty
30by this process, their resources are freed.
31
32@section File descriptor table entries and file control blocks
33
34The file: XXX
35
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