RTEMS 4.8.0 On-Line Library

System Initialization

RTEMS Filesystem Design Guide

Chapter 2: System Initialization

After the RTEMS initialization is performed, the application's initialization will be performed. Part of initialization is a call to rtems_filesystem_initialize(). This routine will mount the `In Memory File System' as the base filesystem. Mounting the base filesystem consists of the following:

Initialization of mount table chain control structure
Allocation of a jnode structure that will server as the root node of the `In Memory Filesystem'
Initialization of the allocated jnode with the appropriate OPS, directory handlers and pathconf limits and options.
Allocation of a memory region for filesystem specific global management variables
Creation of first mount table entry for the base filesystem
Initialization of the first mount table chain entry to indicate that the mount point is NULL and the mounted filesystem is the base file system

After the base filesystem has been mounted, the following operations are performed under its directory structure:

Creation of the /dev directory
Registration of devices under /dev directory

RTEMS Filesystem Design Guide