DevFS device file system

Dynamic device file system. More...

Detailed Description

Dynamic device file system.

This file system implementation allows devices to register file names for easier access to device drivers from shell commands etc.

The idea is similar to the /dev directory on Unix.

Files
file	random-vfs.h
	Random backends for devfs.
file	devfs.h
	DevFS public API.

Data Structures
struct	devfs
	A device "file" consists of a file name and an opaque pointer to device driver private data. More...

Typedefs
typedef struct devfs	devfs_t
	DevFS node typedef.

Functions
int	devfs_register (devfs_t *node)
	Register a node in DevFS. More...
int	devfs_unregister (devfs_t *node)
	Remove a registration from DevFS. More...

Variables
const vfs_file_system_t	devfs_file_system
	DevFS file system driver. More...

Function Documentation

devfs_register()

int devfs_register

(

devfs_t *

node

)

Register a node in DevFS.

The node will immediately become available to vfs_open, if DevFS is already mounted somewhere.

If DevFS is not mounted, the node will be registered and will become available to vfs_open when DevFS is mounted.

Parameters

[in]

node

DevFS node to register

Returns

0 on success

<0 on error

devfs_unregister()

int devfs_unregister

(

devfs_t *

node

)

Remove a registration from DevFS.

The node will no longer be available to vfs_open, but any already opened FDs will remain open.

Parameters

[in]

node

DevFS node to unregister

Returns

0 on success

<0 on error

Variable Documentation

devfs_file_system

const vfs_file_system_t devfs_file_system

DevFS file system driver.

For use with vfs_mount