_rtems_rfs_file_system Struct Reference

#include <rtems-rfs-file-system.h>

Data Fields
uint32_t	flags
size_t	blocks
size_t	block_size
int	device
size_t	size
uint32_t	inodes
uint32_t	bad_blocks
uint32_t	max_name_length
rtems_rfs_group *	groups
int	group_count
size_t	group_blocks
size_t	group_inodes
size_t	inodes_per_block
size_t	blocks_per_block
size_t	block_map_singly_blocks
size_t	block_map_doubly_blocks
uint32_t	max_held_buffers
rtems_chain_control	buffers
uint32_t	buffers_count
rtems_chain_control	release
uint32_t	release_count
rtems_chain_control	release_modified
uint32_t	release_modified_count
rtems_chain_control	file_shares
void *	user

Detailed Description

RFS File System data.

Field Documentation

bad_blocks

uint32_t _rtems_rfs_file_system::bad_blocks

Bad block blocks. This is a table of blocks that have been found to be bad.

block_map_doubly_blocks

size_t _rtems_rfs_file_system::block_map_doubly_blocks

Block map double indirect count. This is the block number per block squared and multiplied by the slots in the inode. It is the maximum number of blocks a map (file/directory) can have.

block_map_singly_blocks

size_t _rtems_rfs_file_system::block_map_singly_blocks

Block map single indirect count. This is the block number per block multiplied but the slots in the inode.

block_size

size_t _rtems_rfs_file_system::block_size

The size of a block. This must be a multiple of the disk's media block size.

blocks

size_t _rtems_rfs_file_system::blocks

The number of blocks in the disk. The size of the disk is the number of blocks by the block size. This should be within a block size of the size returned by the media driver.

blocks_per_block

size_t _rtems_rfs_file_system::blocks_per_block

Number of block numbers in a block.

buffers

rtems_chain_control _rtems_rfs_file_system::buffers

List of buffers attached to buffer handles. Allows sharing.

buffers_count

uint32_t _rtems_rfs_file_system::buffers_count

Number of buffers held on the buffers list.

device

int _rtems_rfs_file_system::device

The file descriptor for device I/O.

file_shares

rtems_chain_control _rtems_rfs_file_system::file_shares

List of open shared file node data. The shared node data such as the inode and block map allows a single file to be open more than once.

flags

uint32_t _rtems_rfs_file_system::flags

Flags to control the file system. Some can be controlled via the ioctl.

group_blocks

size_t _rtems_rfs_file_system::group_blocks

Number of blocks in a group.

group_count

int _rtems_rfs_file_system::group_count

Number of groups.

group_inodes

size_t _rtems_rfs_file_system::group_inodes

Number of inodes in a group.

groups

rtems_rfs_group* _rtems_rfs_file_system::groups

A disk is broken down into a series of groups.

inodes

uint32_t _rtems_rfs_file_system::inodes

Inode count.

inodes_per_block

size_t _rtems_rfs_file_system::inodes_per_block

Number of inodes in each block.

max_held_buffers

uint32_t _rtems_rfs_file_system::max_held_buffers

Number of buffers held before releasing back to the cache.

max_name_length

uint32_t _rtems_rfs_file_system::max_name_length

Maximum length of names supported by this file system.

release

rtems_chain_control _rtems_rfs_file_system::release

List of buffers that need to be released when the processing of a file system request has completed.

release_count

uint32_t _rtems_rfs_file_system::release_count

Number of buffers held on the release list.

release_modified

rtems_chain_control _rtems_rfs_file_system::release_modified

List of buffers that need to be released modified when the processing of a file system request has completed.

release_modified_count

uint32_t _rtems_rfs_file_system::release_modified_count

Number of buffers held on the release modified list.

size

size_t _rtems_rfs_file_system::size

The number of blocks in the file system.

user

void* _rtems_rfs_file_system::user

Pointer to user data supplied when opening.

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The documentation for this struct was generated from the following file:

• cpukit/include/rtems/rfs/rtems-rfs-file-system.h