Filesystems and Mount Table Configuration

Defines to control the file system: More...

Collaboration diagram for Filesystems and Mount Table Configuration:

Macros
#define	CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK   IMFS_MEMFILE_DEFAULT_BYTES_PER_BLOCK
	IMFS. More...
#define	CONFIGURE_SEMAPHORES_FOR_NFS   0
	This defines the IMFS file system table entry. More...
#define	CONFIGURE_SEMAPHORES_FOR_DOSFS   0
	DOSFS.
#define	CONFIGURE_SEMAPHORES_FOR_RFS   0
	RFS.
#define	CONFIGURE_SEMAPHORES_FOR_JFFS2   0
	JFFS2.
#define	CONFIGURE_SEMAPHORES_FOR_FILE_SYSTEMS
	This computes the number of semaphores required for the various file systems including the FIFO plugin to the IMFS. More...

Detailed Description

Defines to control the file system:

• CONFIGURE_APPLICATION_DISABLE_FILESYSTEM: Disable the RTEMS filesystems. You get an empty DEVFS.
• CONFIGURE_USE_DEVFS_AS_BASE_FILESYSTEM: Use the DEVFS as the root file system. Limited functions are provided when this is used.
• CONFIGURE_FILESYSTEM_ALL: Add file filesystems to the default filesystem table.

List of available file systems. You can define as many as you like:

• CONFIGURE_FILESYSTEM_IMFS - In Memory File System (IMFS)
• CONFIGURE_FILESYSTEM_DEVFS - Device File System (DSVFS)
• CONFIGURE_FILESYSTEM_TFTPFS - TFTP File System, networking enabled
• CONFIGURE_FILESYSTEM_FTPFS - FTP File System, networking enabled
• CONFIGURE_FILESYSTEM_NFS - Network File System, networking enabled
• CONFIGURE_FILESYSTEM_DOSFS - DOS File System, uses libblock
• CONFIGURE_FILESYSTEM_RFS - RTEMS File System (RFS), uses libblock
• CONFIGURE_FILESYSTEM_JFFS2 - Journalling Flash File System, Version 2

Combinations:

• If nothing is defined the base file system is the IMFS.
• If CONFIGURE_APPLICATION_DISABLE_FILESYSTEM is defined all filesystems are disabled by force.
• If CONFIGURE_USE_DEV_AS_BASE_FILESYSTEM is defined all filesystems are disabled by force and DEVFS is defined.

Macro Definition Documentation

CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK

#define CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK   IMFS_MEMFILE_DEFAULT_BYTES_PER_BLOCK

IMFS.

This specifies the number of bytes per block for files within the IMFS. There are a maximum number of blocks per file so this dictates the maximum size of a file. This has to be balanced with the unused portion of each block that might be wasted.

CONFIGURE_SEMAPHORES_FOR_FILE_SYSTEMS

#define CONFIGURE_SEMAPHORES_FOR_FILE_SYSTEMS

Value:

(CONFIGURE_SEMAPHORES_FOR_FIFOS + \
     CONFIGURE_SEMAPHORES_FOR_NFS + \
     CONFIGURE_SEMAPHORES_FOR_DOSFS + \
     CONFIGURE_SEMAPHORES_FOR_RFS + \
     CONFIGURE_SEMAPHORES_FOR_JFFS2)

This computes the number of semaphores required for the various file systems including the FIFO plugin to the IMFS.

This is an internal parameter.

CONFIGURE_SEMAPHORES_FOR_NFS

#define CONFIGURE_SEMAPHORES_FOR_NFS   0

This defines the IMFS file system table entry.

DEVFS