Device Filesystem

Device Filesystem. More...

Collaboration diagram for Device Filesystem:

Detailed Description

Device Filesystem.

The devfs is a virtual filesystem that provides access to devices and resources.

Data Structures
struct	devfs_file_desc_t
	Descriptor for batch file creation. More...

Macros
#define	DEVFS_NAME   "devfs"
	The name of the device filesystem.

Functions
void	devfs_init (void)
	Initializes the devfs.
dentry_t *	devfs_dir_new (dentry_t *parent, const char *name, const vnode_ops_t *vnodeOps, void *data)
	Create a new directory inside a mounted devfs instance.
dentry_t *	devfs_file_new (dentry_t *parent, const char *name, const vnode_ops_t *vnodeOps, const file_ops_t *fileOps, void *data)
	Create a new file inside a mounted devfs instance.
dentry_t *	devfs_symlink_new (dentry_t *parent, const char *name, const vnode_ops_t *vnodeOps, void *data)
	Create a new symbolic link inside a mounted devfs instance.
uint64_t	devfs_files_new (list_t *out, dentry_t *parent, const devfs_file_desc_t *descs)
	Create multiple files in a devfs directory.
void	devfs_files_free (list_t *files)
	Free all files in a list created by devfs_files_new().

Macro Definition Documentation

DEVFS_NAME

#define DEVFS_NAME   "devfs"

The name of the device filesystem.

Definition at line 26 of file devfs.h.

Function Documentation

devfs_init()

void devfs_init

(

void

)

Initializes the devfs.

Definition at line 50 of file devfs.c.

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devfs_dir_new()

dentry_t * devfs_dir_new	(	dentry_t *	parent,
		const char *	name,
		const vnode_ops_t *	vnodeOps,
		void *	data
	)

Create a new directory inside a mounted devfs instance.

Parameters

parent	The parent directory, if NULL then the root is used.
name	The name of the new directory.
vnodeOps	The vnode operations for the new directory, can be NULL.
private	Private data to store in the vnode of the new directory, can be NULL.

Returns

On success, the new devfs directory. On failure, NULL and errno is set.

Definition at line 82 of file devfs.c.

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devfs_file_new()

dentry_t * devfs_file_new	(	dentry_t *	parent,
		const char *	name,
		const vnode_ops_t *	vnodeOps,
		const file_ops_t *	fileOps,
		void *	data
	)

Create a new file inside a mounted devfs instance.

Parameters

parent	The parent directory, if NULL then the root is used.
name	The name of the new file.
vnodeOps	The vnode operations for the new file, can be NULL.
fileOps	The file operations for the new file, can be NULL.
private	Private data to store in the vnode of the new file, can be NULL.

Returns

On success, the new devfs file. On failure, NULL and errno is set.

Definition at line 121 of file devfs.c.

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devfs_symlink_new()

dentry_t * devfs_symlink_new	(	dentry_t *	parent,
		const char *	name,
		const vnode_ops_t *	vnodeOps,
		void *	data
	)

Create a new symbolic link inside a mounted devfs instance.

Parameters

parent	The parent directory, if NULL then the root is used.
name	The name of the new symbolic link.
vnodeOps	The vnode operations for the new symbolic link.
private	Private data to store in the vnode of the new symbolic link, can be NULL.

Returns

On success, the new devfs symbolic link. On failure, NULL and errno is set.

Definition at line 161 of file devfs.c.

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devfs_files_new()

uint64_t devfs_files_new	(	list_t *	out,
		dentry_t *	parent,
		const devfs_file_desc_t *	descs
	)

Create multiple files in a devfs directory.

Parameters

out	Output list to store created dentries, can be NULL. The dentries use the otherEntry list entry.
parent	The parent directory, if NULL then the root is used.
descs	Array of file descriptors, terminated by an entry with name == NULL.

Returns

On success, the number of files created. On failure, ERR and errno is set.

Definition at line 195 of file devfs.c.

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devfs_files_free()

void devfs_files_free

(

list_t *

files

)

Free all files in a list created by devfs_files_new().

Parameters

files

The list of files to free.

Definition at line 250 of file devfs.c.

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